Extremity Anatomy Exam 1

Which nerve would most likely be injured by a traumatic dislocation of the humeral head? A. Radial B. Musculocutaneous C. Median D. Axillary E. Ulnar

D. Axillary

In this patient, paralysis of the supinator muscle only slightly affects the ability to supinate due to the unimpaired action of the: A. Pronator teres B. Brachioradialis C. Pronator quadratus D. Biceps brachii E. Triceps brachii

D. Biceps brachii

When taking the blood pressure, the stethoscope is usually placed on which artery? A. Ulnar B. Profunda brachii C. Axillary D. Brachial E. Radial

D. Brachial

All of the following muscles are involved in arm flexion except: A. Biceps brachii B. Deltoid C. Coracobrachialis D. Brachialis

D. Brachialis

The inferior trunk of the brachial plexus is formed by anterior rami of which spinal cord segments: A. C5 B. C6 C. C7 D. C8 E. T1

D. C8 E. T1

All of the following bony landmarks are visible on a skeleton when viewed directly from behind (posterior view), EXCEPT: A. Medial epicondyle B. Greater tubercle C. Spiral groove D. Lesser tubercle E. Olecranon process

D. Lesser tubercle

After a time, when a motor nerve to a muscle is sectioned, the muscles will atrophy (get smaller). If you notice that the thenar muscles are atrophied, which nerve would you suppose has been injured? A. Musculocutaneous B. Ulnar C. Radial D. Median E. Thoracodorsal

D. Median

Which muscle acts as a synergist to the serrates anterior? A. Rhomboid major B. Levator scapulae C. Both D. Neither

D. Neither

Damage to the Coracobrachialis muscle would impair which motion of the forearm A. Extension B. Flexiono C. Pronation D. None

D. None

The posterior cord of the brachial plexus is formed by A. The anterior divisions of the upper and middle trunks B. Cervical nerve roots C5-C7 C. The anterior divisions of the upper, middle, and lower trunks D. Posterior divisions of the upper, middle, and lower trunks

D. Posterior divisions of the upper, middle, and lower trunks

Which artery accompanies the radial nerve to supply the posterior compartment of the arm? A. Axillary B. Brachial C. Ulnar D. Profunda brachii E. Radial

D. Profunda brachii

The artery that may be palpated deep in the "anatomical snuff box" is the: A. Superficial ulnar B. Posterior interosseous C. Cephalico D. Radial E. Deep ulnar

D. Radial

A physical sign known as "winged scapula" suggests loss of function to which of the following muscles? A. Rhomboid major B. Levator scapulae C. Latissimus dorsi D. Serratus anterior E. Trapezius

D. Serratus anterior

The lateral cord of the brachial plexus is formed by the: A. Anterior division of the superior trunk B. Posterior division of middle trunk C. Anterior division of the lower trunk D. Posterior trunk

A. Anterior division of the superior trunk

The lateral cord of the brachial plexus is formed by the: A. Anterior division of the superior trunk B. Posterior division of the middle trunk C. The anterior division of the lower trunk D. Both A and C

A. Anterior division of the superior trunk

Which nerve is probably damaged if a patient cannot abduct the arm beyond 25 degrees? A. Axillary B. Radial C. Musculocutaneous D. Median E. Ulnar

A. Axillary

Which of the following anatomic landmarks/structures is not associated with the pathway taken by the profound brachii artery in the arm? A. Lateral head triceps muscle B. Teres minor muscle C. Radial nerve D. All are associated pathways

B. Teres minor muscle

The circumflex scapular artery passes through which axillary space? A. Quadrangular space B. Triangular space C. Suprascapular notch D. Triangular interval

B. Triangular space

Fracture of the surgical neck of the humerus A. radial nerve B.. axillary nerve C. ulnar nerve D. median nerve E. medial brachial cutaneous nerve

B.. axillary nerve

The most powerful forearm flexor starting from a 90 degree position is the: A: Brachialis. B: Biceps brachii. C: Coracobrachialis. D: Brachioradialis.

B: Biceps brachii.

In the cubital fossa, which structure contributes to the lateral border? A: Pronator teres B: Brachioradialis C: Biceps brachii tendon D: Supinator muscle

B: Brachioradialis

Structures at particular risk with this fracture include but are not limited to the: A: Radial nerve, B: Circumflex humeral artery. C: Axillary artery D: A & B E: A & C F: B& C

B: Circumflex humeral artery

Ole Olafson, a 57year old white male, develops a neurofibroma of the musculocutaneous nerve located between the brachalis and biceps brachii muscle of this left arm. Because he is unable to seek medical care the mass grows to a 3 cm diameter mass. You would expect this mass to produce a deficit in: A: Arm flexion. B: Hand supination. C: Both. D: Neither.

B: Hand supination.

This muscle inserts on the floor of the intertubercular groove? A: Teres major B: Latissimus dorsi C: Pectoralis major D: Corachobrachialis

B: Latissimus dorsi

Identify the muscle(s) involved in arm extension. A: Medial head of the triceps brachii muscle. B: Long head of the triceps brachi muscle. C: Lateral head of the triceps brachii muscle. D: All of the above.

B: Long head of the triceps brachi muscle

When the forearm is fully flexed the brachial artery is nearly occluded (blocked), which of the following vessels will provide flow beyond the elbow? A: Nutrient artery B: Profunda brachii C: Inferior ulnar collateral D: anterior interosseous artery

B: Profunda brachii C: Inferior ulnar collateral

Which of the following anatomic landmarks/structures is not associated with the pathway taken by the profundi brachii artery in the arm? A: Lateral head triceps muscle. B: Teres minor muscle. C: Radial nerve. D: All are associated with the pathway taken by the profunda brachii artery.

B: Teres minor muscle

Select all that apply - which of the following are actions of the anconeus muscle? A: forearm flexion B: abducts the ulna during pronation C: tenses elbow joint capsule to prevent entrapment D: supinates the forearm

B: abducts the ulna during pronation C: tenses elbow joint capsule to prevent entrapment

The cervicoaxillary canal (Thoracic outlet) is bounded by what structures? A: clavicle, rib 2, and sternum B: clavicle, rib 1, and scapula C: humerus, rib 1, and scapula D: rib 2, scapula, and clavicle

B: clavicle, rib 1, and scapula

The major function of the rotator cuff muscles is to: A. Assist in shoulder abduction B. Initiate medial rotation of the arm C. Maintain the humeral head in the glenoid fossa D. Prevent lateral rotation

C. Maintain the humeral head in the glenoid fossa

A humeral shaft fracture distal to the formation of the radial groove would result in weakness of: A. Long head of triceps B. Lateral head of triceps C. Medial head of triceps D. All heads of the triceps

C. Medial head of triceps

With an injury to the right upper trunk of the brachial plexus (Erb Duchenne paralysis), the patient's right upper extremity would be: A. Abducted B. Adducted C. Medially rotated D. Laterally rotated E. Flexed

C. Medially rotated

Which of the following nerves sends branches to the muscles of the arm? A. Mediano Ulnar B. Dorsal scapular C. Musculocutaneous D. Long thoracic

C. Musculocutaneous

Which nerve-artery pair does not run together? A. Radial nerve- Profunda brachii artery B. Axillary nerve- Posterior humeral circumflex artery C. Musculocutaneous nerve- Brachial artery D. Ulnar nerve- Brachial artery

C. Musculocutaneous nerve- Brachial artery

Which nerve-artery pair does not run together? A: Radial nerve- Profunda brachil artery. B: Axillary nerve- Posterior humeral circumflex artery. C: Musculocutaneous nerve- Brachial artery. D: Ulnar nerve- Brachial artery.

C: Musculocutaneous nerve- Brachial artery.

Which artery supplies the first two intercostal spaces? A: Lateral thoracic B: Thoracodorsal C: Superior thoracic D: Deltoid branch of thoracoacromial trunk

C: Superior thoracic

This artery supplies the superior lateral portion of the the posterior scapula? A: Lateral thoracic B: Thoracodorsal C: Suprascapular D: Circumflex humeral

C: Suprascapular

What structure below is involved in forming the posterior wall of the axilla? A: Pectoralis major B: Intertubercular groove of humerus C: Teres major D: Axillary fascia

C: Teres major

Johnny C. Rocket has been ejected from his motor cycle and suffered an upper brachial plexus injury. His serratus anterior and rhomboid major & minor remain functional however the supra & infraspinatus show evidence of complete enervation. This allows you to isolate his lesion to: A: The C5 & C6 nerve roots. B: The anterior division of the middle trunk. C: The superior (upper) trunk. D: The posterior division of the inferior (lower) trunk.

C: The superior (upper) trunk

This structure is found running between the deltoid and pectoralis major muscle? A: basilic vein B: axillary artery C: cephalic vein D: brachial artery

C: cephalic vein

Winging of the scapula involving the superior and superior medial border of the scapula can be caused by a: A. Suprascapular nerve injury B. Dorsal scapular nerve C. Long thoracic nerve D. Accessory nerve

D. Accessory nerve

Identify muscles involved in arm extension A. Latissimus dorsi B. Teres major C. Deltoid D. All of the above

D. All of the above

The pectoralis minor A. Inserts on the coracoid process of the scapula B. Actual function in upper extremity innervation is generally unknown C. Organizes the contents of the axilla D. All of the above

D. All of the above

A group of plastic and reconstructive surgeons were attending a convention. A woman named Lotty was performing her world famous inverted spin while hanging from a trapeze. Dr. Watson queried Dr. Crick, "Say, do you think she has undergone breast augmentation?" Dr Crick noted the development of Lotty's bosom beginning at, and a faint scare along what he calculated to be the T8 dermatome (remember she is upside down). Crick's answer should be: o "I see no evidence of enhancement" o "She's had work done by somebody whom likely slept through anterior thoracic wall anatomy" o "She's had work done by somebody whom likely didn't sleep through anterior thoracic wall anatomy"

o "She's had work done by somebody whom likely slept through anterior thoracic wall anatomy"

The pectoral minor muscle functions o As an accessory muscle of inspiration o To stabilize the scapula during upper extremity function o To organize the contents of the axilla for anatomy students o All of the above

o All of the above

The origin of the basilic vein is: o Axillary vein o Brachial vein o Dorsal venous plexus of hand o Median cubital vein

o Dorsal venous plexus of hand

The origin of the cephalic vein is the

o Dorsal venous plexus of the hand o Axillary vein o Brachial vein o Basilic vein o Dorsal venous plexus of the hand

As she is completing her signature move, Lotty begins to slip from the trapeze. In her inverted position, her extended arms are just 20 inches from the surface and she is able to prevent a face plant by extending her arms. Once in contact with the stage, which head of the tricep muscle will provide the majority of force in preventing her from ruining a $5,000 rhinoplasty? o Long head o Medial head o Lateral head o All heads function equally

o Lateral head

The antebrachial fascia structures involved in separation of anterior and posterior muscular compartments include the: o Lateral intermuscular septum o Medial intermuscular septum o Both o Neither

o Lateral intermuscular septum

Insertion of the biceps brachii involves o Radial tubercle o Ulnar tubercle o Both o Neither

o Radial tubercle

This muscle has a single origin, a single insertion, single innervations and major function does not involve contraction: o Pectoralis minor o Rhomboid minor o Subclavius o Levator scapulae

o Subclavius

Damage to biceps brachii muscle would impair forearm: o Extension o Supination o Pronation o None of the above

o Supination

Which of the following anatomic structures contains a named vascular structure in isolation? (Spring 16) o Quadrangular space o Quadrangular interval o Triangular space o Triangular interval

o Triangular space

Which of the following muscles is not a medial rotator of the arm? A: Subscapularis. B: Latissimus dorsi. C: Infraspinatus. D: Teres major.

C: Infraspinatus

Which of the following muscles lacks a direct attachment to the humerus? A. Biceps brachii B. Coracobrachialis C. Brachialis D. Anconeus E. Deltoid F. Supraspinatus G. Teres minor

A. Biceps brachii

With the elbow flexed at 90 degrees the majority of supination is performed by the: A. Biceps brachii B. Supinator C. Brachialis D. Pectoralis minor E. Pectoralis major

A. Biceps brachii

The most powerful forearm flexor is the: A. Brachialis B. Biceps brachii C. Coracobrachialis D. A and B are equally powerful in forearm flexon

A. Brachialis

The most powerful forearm flexor starting from an extended position is the: A. Brachialis B. Biceps brachii C. Coracobrachialis D. Brachioradialis

A. Brachialis

A structure found in the deltopectoral groove is the A structure found in the deltopectoral groove is the A. Cephalic vein B. Basilica vein C. Radial veino Brachial vein D. Musculocutaneous nerve

A. Cephalic vein

The scapular spine does all of the following except: A. Forms the floor of the infrascapular fossa B. Forms the acromion C. Has a bony prominence called the deltoid tubercle D. All are accurate with respect to the scapular spine

A. Forms the floor of the infrascapular fossa

The levator scapulae muscle A. Innervated by C3 and C4 cervical nerves B. Inserts on medial scapula angle C. Depresses scapula D. All of the above

A. Innervated by C3 and C4 cervical nerves

Which artery runs along the lateral border of the pectoralis minor muscle? A. Lateral thoracic B. Thoracodorsal C. Superior thoracic D. Deltoid branch of thoracoacromial trunk

A. Lateral thoracic

The supraglenoid tubercle serves as an attachment for the: A. Long head of biceps brachii B. Long head of triceps brachii C. Medial head of the triceps D. Coracobrachialis E. Subscapularis

A. Long head of biceps brachii

The ulnar nerve is a branch of which cord of the brachial plexus? A. Medial B. Lateral C. Posterior D. Anterior

A. Medial

At the front of the elbow, which of the following lies superficial to the bicipital aponeurosis? A. Median cubital vein B. Brachial artery C. Median nerve D. Ulnar nerve E. Cephalic vein

A. Median cubital vein

Loss of pronation of the hand suggests a lesion of the: A. Median nerve b. Radial nerve C. Ulnar nerve D. Intercostobrachial nerve E. Musculocutaneous nerve

A. Median nerve

In normal forearm bony architecture, the radial styloid process is ____ to the ulnar styloid process. Choose the best response to fill in the blank.

A. One centimeter distal B. One centimeter proximal C. Equidistant D. There's no such structure as the ulnar styloid process A. One centimeter distal

The subscapularis muscle:

A. Originates from lateral border of scapula B. Is innervated by upper, middle, and lower subscapular nerves C. Is a strong lateral rotator D. Inserts on the lesser tubercle of the humerus D. Inserts on the lesser tubercle of the humerus

What structure below is involved in forming the anterior wall of the axilla? A. Pectoralis major B. Intertubercular groove of humerus C. Subscapularis D. Axillary fascia

A. Pectoralis major

If a tumor grows in the quadrangular space of the axillary region which structure would be in danger? A. Posterior humeral circumflex artery and axillary nerve B. Posterior humeral circumflex artery and radial nerve C. Radial nerve and profunda brachii artery D. Circumflex scapular artery and radial artery E. Axillary artery and posterior humeral circumflex artery

A. Posterior humeral circumflex artery and axillary nerve

The risk of breast cancer is increased with increasing breast size in: A. Premenopausal women with a BMI <25 B. Premenopausal women with a BMI >25 C. Post menopausal women with a BMI >25 D. The risk of breast cancer is independent of breast size in premenopausal women but not postmenopausal women

A. Premenopausal women with a BMI <25

Complete occlusion of the axillary artery 3 millimeters distal to the lateral thoracic branch will result in: A. Reversal of flow in subscapular artery B. Ischemia of distal upper extremity C. Reversal of flow in brachial artery D. All of the above

A. Reversal of flow in subscapular artery

Which joint is the sole bony connection between the upper extremity and axial skeleton? A. SC joint (Sternoclavicular) B. AC joint (acromioclavicular) C. GH joint (glenohumeral) D. There is more than one joint involved in the bony articulation of the upper extremity and axial skeleton

A. SC joint (Sternoclavicular)

What structure below is involved in forming the posterior wall of the axilla? A. Teres major B. Intertubercular groove of the humerus C. Axillary fascia D. Pectoralis major

A. Teres major

Which nerve-artery pair does not run together? A. Ulnar artery and inferior ulnar collateral artery B. Ulnar nerve and superior ulnar collateral artery C. Median nerve and brachial artery D. Anterior interosseous nerve and anterior interosseous artery

A. Ulnar artery and inferior ulnar collateral artery

What is the most common site for breast cancer? A. Upper outer quadrant B. Upper inner quadrant C. Lower outer quadrant D. Lower inner quadrant

A. Upper outer quadrant

Which of the following two vessel pairs can supply blood to the dorsal scapular region if flow is blocked at the proximal supra scapular artery? A. dorsal scapular and subscapular arteries B. long thoracic and circumflex scapular arteries C. dorsal scapular and profunda brachii arteries D. pectoral branch of the thoracoacromial trunk and circumflex scapular artery

A. dorsal scapular and subscapular arteries

The thoracodorsal nerve innervates the__________muscle and allows for__________rotation of the humerus. A. latissimus dorsi; medial B. deltoid; medial C. serrates anterior; lateral D. pectoralis major; medial E. subscapularis; medial

A. latissimus dorsi; medial

Mid-shaft humeral fracture A. radial nerve B.. axillary nerve C. ulnar nerve D. median nerve E. medial brachial cutaneous nerve

A. radial nerve

The initiation of arm abduction requires an intact: A. suprascapular nerve B. axillary nerve C. upper and lower subscapular nerve D. nerve to the subclavius

A. suprascapular nerve

Most of the muscles that act on the shoulder girdle and upper limb joints are supplied by branches of the brachial plexus. Which of the following is not? A. trapezius B. teres minor C. latissimus dorsi D. rhomboid major E. levator scapulae

A. trapezius

The origin of the Cephalic vein is the: A: Dorsal venous plexus of the hand. B: Axillary vein. C: Brachial vein. D: Basilic vein.

A: Dorsal venous plexus of the hand

Which artery runs along the lateral border of the pectoralis minor muscle? A: Lateral thoracic B: Thoracodorsal C: Superior thoracic D: Deltoid branch of thoracoacromial trunk

A: Lateral thoracic

This muscle has a dual origin, a single insertion and dual innervation. A: Pectoralis major. B: Brachialis. C: Subscapularis. D: Anconeus.

A: Pectoralis major.

The posterior circumflex humeral artery passes through which axillary space? A: Quadrangular space B: Triangular space C: Suprascapular notch D: Triangular interval

A: Quadrangular space

The rhomboid muscle complex (major & minor) is innervated by: A: The dorsal scapular nerve. B: C3 & C4 nerve roots. C: Both. D: Neither.

A: The dorsal scapular nerve

Which of the following two vessel pairs can supply blood to the dorsalscapular region if flow is blocked at the proximal suprascapular artery? A: dorsal scapular and subscapular arteries B: long thoracic and circumflex scapular arteries C: dorsal scapular and profunda brachii arteries D: pectoral branch of the thoracoacromial trunk and circumflex scapular artery

A: dorsal scapular and subscapular arteries

In normal forearm bony architecture the radial stylold process is to the ulnar styloid process. Choose the best response to fill in the blank. A: one centimeter distal B: one centimeter proximal C: equidistant D: There's no such structure as the ulnar styloid process.

A: one centimeter distal

The nerve most likely to be traumatized with a fracture to the surgical neck of the humerus is the? A. Median B. Axillary C. Radial D. Ulnar E. Profunda brachii

B. Axillary

The dermatome of the thumb is innervated by various elements arising from which spinal cord segments? A. C5 B. C6 C. C7 D.C8 E. T1

B. C6

The lateral cord of the brachial plexus is: A. Formed by the anterior divisions of the middle and lower trunks of the brachial plexus B. Innervates the anterior compartment muscles of the arm C. Contains nerves from cervical roots 7 and 8 D.All of the above

B. Innervates the anterior compartment muscles of the arm

The triangle of auscultation is: A. Formed by the margins of the latissimus dorsi, teres major, and trapezius muscles B. Is useful in identifying the T6 level C. Is found immediately medial to the lateral margin of the scapula D. All of the above

B. Is useful in identifying the T6 level

The true statement about the posterior compartment of the arm is: A. It receives its motor supply from the median nerve B. It contains the profunda brachii artery and radial nerve C. It contains a single elbow flexor D. Its major artery is the brachial E. It contains the ulnar nerve in its distal part F. It receives motor supply from lateral cord of brachial plexus

B. It contains the profunda brachii artery and radial nerve

The proximal and distal ends of the axillary artery are A. Medial border of the clavicle, inferior border of the teres major B. Lateral border of the 1st rib, inferior border of the teres major C. Lateral border of the 1st rib, inferior border of the teres minor D. Medial border of the clavicle, superior border of the latissimus dorsi insertion

B. Lateral border of the 1st rib, inferior border of the teres major

The proximal and distal ends of the axillary artery are: A. Medial border of the clavicle, inferior border of the teres major B. Lateral border of the 1st rib, inferior border of the teres major C. Lateral border of the 1st rib, inferior border of the teres minor D. Medial border of the clavicle, superior border of the latissimus dorsi insertion

B. Lateral border of the 1st rib, inferior border of the teres major

The infraglenoid tubercle serves as an attachment for the: A. Long head of the biceps B. Long head of the triceps C. Coracobrachialis D. Subscapularis

B. Long head of the triceps

Identify the muscle(s) involved in arm extension. A. Medial head of the triceps brachii muscle B. Long head of the triceps brachii muscle C. Lateral head of the triceps brachii muscle D. All of the above

B. Long head of the triceps brachii muscle

Identify muscles involved in arm extension? A. Medial head of triceps B. Long head of triceps C. Lateral head of triceps D. All of the above

B. Long head of triceps

The distal attachment (insertion) of the triceps brachii muscle is A. Coronoid process of the ulna B. Olecranon process of the ulna C. Styloid process of the ulna D. Radial notch of the ulna E. Ulnar tuberosity

B. Olecranon process of the ulna

The muscle that forms the bulk of the anterior axillary fold is the: A. Latissimus dorsi B. Pectoralis major C. Subscapularis D. Teres minor E. Teres major

B. Pectoralis major

All of these arteries may contribute to the anastomoses around the scapula EXCEPT the: A. Transverse cervical B. Profunda Brachii C. Intercostal D. All contribute

B. Profunda Brachii

Which carpal bone articulates with the radius? A. Trapezoid B. Scaphoid C. Hamate D. Capitate

B. Scaphoid

The medial wall of the axilla is formed by which of the following muscles? A. Teres major B. Serratus anterior C. Pectoralis major D. Subscapulariso E. Pectoralis minor

B. Serratus anterior

Which of the following muscles does NOT rotate the arm medially (or internally)? A. Subscapularis B. Supraspinatus C. Latissimus Dorsi D. Pectoralis Majoro Anterior fibers of the Deltoid

B. Supraspinatus

This structure allows for full extension at the elbow? A: radial fossa B: olecranon fossa C: coronoid fossa D: intertubercular groove

B: olecranon fossa

Tom Cruise is filming a stint for his latest feature movie. In the penultimate scene, Ethan Hunt (Cruise) was performing an inverted rappel into a giant cookie jar full of chocolate chip cookies. Just as he was about to land, about 20 inches from the ground Stedman cut the rope causing him to fall. He caught himself with slightly flexed arms and slowly lowered himself to the ground to prevent him from face planting. Once in contact with the ground, which head of the tricep muscle will provide the majority of force in preventing Ethan from ruining a $50,000 rhinoplasty? A. Long head B. Medial head C. Lateral head D. All heads will function equally

C. Lateral head

The teres major is innervated by the: A. Axillary nerve B. Upper subscapular nerve C. Lower subscapular nerve D. Thoracodorsal nerve

C. Lower subscapular nerve

The teres major is innervated by the: A. Axillary nerve B. Upper subscapular nerve C. Lower subscapular nerve D. Thoracodorsal nerve

C. Lower subscapular nerve

The major function of the rotator cuff muscles is to: A. Assist in shoulder abduction B. Initiate medial rotation of the arm C. Maintain the humeral head in the glenoid fossa D. Prevent lateral rotation

C. Maintain the humeral head in the glenoid fossa

Damage to suprascapular nerve results in impaired A. Arm abduction B. Lateral arm rotation C. Both a & b D. Neither

C. Both a & b

At which location will occlusion of the identified artery result in significant impairment of arterial flow to the distal upper extremity? A. Subclavian artery distal to the thyrocervical trunk B. Proximal profunda brachii artery C. Brachial artery just proximal to the profunda brachii artery D. Brachial artery just proximal to the thoracoacromial trunk (artery)

C. Brachial artery just proximal to the profunda brachii artery

Which muscle functions only to flex the forearm? A. Biceps brachii B. Coracobrachialis C. Brachialis D. All flex the forearm

C. Brachialis

Which of these muscles is not attached to the coracoid process? A. Coracobrachialis B. Pectoralis minor C. Brachialis D. Biceps brachii

C. Brachialis

Which carpal bone articulates with the greatest number of other carpal bones? A. Trapezoid B. Trapezium C. Capitate D. Pisiform

C. Capitate

Which carpal bone articulates with the greatest number of other carpal bones? (SUMMER '15) A. Trapezoid B. Trapezium C. Capitate D. Pisiform

C. Capitate

The contents of the delto-pectoral groove include: A. Axillary artery B. Axillary vein C. Cephalic vein D. All of the above

C. Cephalic vein

Long thoracic nerve injury is associated with all of the following except? A. Winging of the scapula B. Difficulty with maximum arm extension overhead C. Decreased sensation over lateral thorax D. Difficulty performing a push up (even a girly one with your knees on the ground)

C. Decreased sensation over lateral thorax

Damage to the Coracobrachialis muscle and its nerve supply would weaken which motion of the arm and forearm? A. Extension B. Rotation C. Flexion D. Supination E. Abduction

C. Flexion

Which of the following muscles is a lateral rotator of the arm? A. Subscapularis B. Latissimus dorsi C. Infraspinatus D. Teres major E. Anterior fibers of the deltoid

C. Infraspinatus

The triangle of auscultation is: A. Formed by the margins of the latissimus dorsi, serratus anterior and trapezius muscles B. Useful in identifying the T6 level C. Is found immediately medial to the medial margin of the scapula D. All of the above

C. Is found immediately medial to the medial margin of the scapula

The following statements regarding the rhomboid major muscle are accurate except: A. It originates from the ligamentum nuchae & spinous processes of C7-T1 B. It is innervated by the dorsal scapular nerve C. It draws the scapula laterally D. It inserts on the medial border of the scapula inferior to the scapular spine

C. It draws the scapula laterally

This muscle has a single origin, single insertion and dual innervation A. Pectoralis major B. Brachialis C. Subscapularis D. Anconeus

C. Subscapularis

The only rotator cuff muscle that does not contribute to rotation of the arm is the: A. Teres minor B. Infraspinatus C. Supraspinatus D. Subscapularis

C. Supraspinatus

The only rotator cuff muscles that does not contribute to the rotation of arm is the: A. Teres minor B. Infraspinatus C. Supraspinatus D. Subscapularis

C. Supraspinatus

All of the following muscles attach to the medial border of the scapula EXCEPT the: A. Levator scapulae B. Rhomboideus major C. Teres major D. Serratus anterior E. Rhomboideus minor

C. Teres major

The nerve most likely to be injured in fractures of the medial epicondyle is the: A. Radial B. Axillary C. Ulnar D. Median E. Musculocutaneous

C. Ulnar

In the cubital fossa, the median cubital vein is frequently used for venipuncture. This vein is separated from underlying neurovascular structures by the: A. investing fascia of the brachialis muscle B. crural fascia C. bicipital aponeurosis D. anconeus muscle E. tendon of the biceps brachialis muscle

C. bicipital aponeurosis

Increasing muscle mass and tone is the aim of many people who work out at the gym. This is done by contracting the muscle against resistance. If you want to increase the muscle mass of the latissimus dorsi muscle, which of the following actions would you be most likely to perform? A. depression of the scapula B. abduction of the arm C. extension of the arm D. flexion of the arm E. lateral rotation of the arm

C. extension of the arm

Numbness to the skin on the lateral half of the palm of the hand would be caused by a lesion to which nerve? A. ulnar B. radial C. median D. superficial radial E. anterior interosseous

C. median

If the dorsal rootlets of T4 are cut (dorsal rhizotomy) there will be a loss of sensation at the level of the: A. neck B. clavicle C. nipple D. umbilicus

C. nipple

The nerve most likely to be injured in fractures of the medial epicondyle is the: A. radial B. axillary C. ulnar D. median E. musculocutaneous

C. ulnar

Bones can fracture or be displaced from their normal anatomical position at any of several locations. Each of these injuries may traumatize a nerve passing close to the bone in question at that location. Match the nerve most likely to be injured with the problem: Fracture of the medial epicondyle of the humerus A. radial nerve B.. axillary nerve C. ulnar nerve D. median nerve E. medial brachial cutaneous nerve

C. ulnar nerve

Which joint serves as the only bony attachment of the superior limb to the axial skeletion? A. Glenohumeral B. Acromioclavicular C. Scapulothoracic D. Sternoclavicular E. Costoclavicular

D. Sternoclavicular

All of the following muscles are arm adductors except: A. Teres major B. Pectoralis major C. Latissimus dorsi D. Supraspinatus

D. Supraspinatus

The long head of the biceps brachii muscle arises from the A. Infraglenoid tubercle of the scapula B. The acromion process C. The corocoid process D. The supraglenoid tubercle of the scapula E. Short head of the triceps

D. The supraglenoid tubercle of the scapula

Damage to the medial pectoral nerve will disrupt functions of which muscle(s): A. Deltoid B. Pectoralis major C. Pectoralis minor D. Two of the above E. None of the above

D. Two of the above

A 52-year-old man was brought to the emergency room after being found in the park where he had apparently lain overnight after a fall. He complained of severe pain in the left arm. Physical examination suggested a broken humerus, which was confirmed radiologically. The patient was able to extend the forearm at the elbow, but supination appeared somewhat weak; the hand grasp was very weak when compared with the uninjured arm. Neurologic examination revealed an inability to extend the wrist ("wrist drop"). Since these findings pointed to apparent nerve damage, the patient was scheduled for a surgical reduction of the fracture. In this patient, paralysis of the supinator muscle only slightly affects the ability to supinate due to the unimpaired action of the: A. pronator teres B. brachioradialis C. pronator quadratus D. biceps brachii E. triceps brachii

D. biceps brachii

The lateral boundary of the cubital fossa is formed by the: A. flexor carpi radialis muscle B. tendon of the biceps muscle C. brachialis muscle D. brachioradialis muscle E. pronator teres muscle

D. brachioradialis muscle

The lower subscapular nerve innervates the____________allows for______________rotation of the humerus. A: latissimus dorsi; medial B: latissimus dorsi; medial B: latissimus dorsi; lateral C. serrates anterior; ilateral D. treres major; medial E: subscapularis; lateral

D. treres major; medial

The lateral cord of the brachial plexus is formed by the: A: Posterior division of the superior trunk. B: Posterior division of the middle trunk. C: Anterior division of the lower trunk. D: Anterior division of the middle trunk.

D: Anterior division of the middle trunk.

This muscle acts to flex and adduct the arm? A: Pectoralis minor B: Brachialis C: Biceps brachii D: Coracobrachialis

D: Coracobrachialis

This muscle has a single origin, a single insertion, a single innervation, and two functions: A: Pectoralis major. B: Brachialis. C: Deltoid. D: Coracobrachialis

D: Coracobrachialis

The subscapularis muscle: A: Originates from the lateral border of the scapula. B. Is innervated by the upper, middle & lower subscapular nerves. C: Is a strong lateral rotator. D: Inserts on the lesser tubercle of the humerus.

D: Inserts on the lesser tubercle of the humerus.

If the deep brachial artery is occluded immediately after branching from the brachial artery, which artery is capable of supplying blood to the elbow? A: Middle collateral B: Inferior ulnar collateral C: Circumflex humeral D: Radial collateral

D: Radial collateral

In the cubital fossa, which structure is found immediately lateral to the brachial artery? A: brachial artery B: median nerve C: deep radial nerve D: biceps brachii tendon

D: biceps brachii tendon

Which carpal bone articulates with the fewest number of other carpal bones? A: capitate B: trapezium C: triquetrum D: pisiform

D: pisiform

The superficial vein that runs up the ulnar side of the upper limb is the: A. Radial B. Median forearm C. Axillary D. Cephalic E. Basilic

E. Basilic

All of these arteries may contribute to the anastomoses around the scapula EXCEPT the: A. Subscapular B. Transverse cervical C. Suprascapular D. Intercostal E. Lateral thoracic

E. Lateral thoracic

A large muscle that arises from two heads, flexes and medially rotates the arm. It is innervated by nerves arising from different cords of the brachial plexus. This is the: A. Latissimus dorsi B. Trapezius C. Deltoid D. Subscapularis E. Pectoralis major F. Biceps brachii

E. Pectoralis major

A branch of the axillary artery is the: A. Costocervical B. Verterbral C. Dorsal scapular D. Suprascapular E. Subscapular

E. Subscapular

Which of the following statements is TRUE for the pectoralis major muscle? A. It arises from the humerus B. It inserts into the bony ribs C. It abducts the arm D. It is innervated by the median nerve E. There is no true statement

E. There is no true statement

Anterior dislocation of the lunate A. radial nerve B.. axillary nerve C. ulnar nerve D. median nerve E. medial brachial cutaneous nerve

E. medial brachial cutaneous nerve

A 52-year-old man was brought to the emergency room after being found in the park where he had apparently lain overnight after a fall. He complained of severe pain in the left arm. Physical examination suggested a broken humerus, which was confirmed radiologically. The patient was able to extend the forearm at the elbow, but supination appeared somewhat weak; the hand grasp was very weak when compared with the uninjured arm. Neurologic examination revealed an inability to extend the wrist ("wrist drop"). Since these findings pointed to apparent nerve damage, the patient was scheduled for a surgical reduction of the fracture. The observations that extension at the elbow appeared normal, but supination of the forearm weak, warrants localization of the nerve to the: A. posterior division of the brachial plexus B. posterior cord of the brachial plexus in the axilla C. radial nerve at the distal third of the humerus D. radial nerve injury in the vicinity of the head of the radius E. radial nerve in the mid-forearm

E. radial nerve in the mid-forearm

The uppermost part of the rotator cuff of the shoulder is the tendon of the: A. deltoid B. teres minor C. teres major D. subscapularis E. supraspinatus

E. supraspinatus

You are to perform a venipuncture of the median cubital vein. Which of the following structures is most suitably located to afford protection against your inadvertently entering the brachial artery rather than the veins? A. the tendon of the biceps brachii muscle B. the tendon of the brachialis C. the brachioradialis muscle D. the medial epicondyle of the humerus E. the bicipital aponeurosis

E. the bicipital aponeurosis

Which of the following structures pass between the middle and posterior scalene muscles? Choose all that apply. A: Brachial plexus B: Subclavian artery C: Subclavian vein D: All of the above E: None of the above

E: None of the above

The following statements regarding the pectoralis major are accurate EXCEPT: A. The clavicular head receives dual innervations B. The lateral pectoral nerve supplies only the lateral portion of the sternal head C. It forms the anterior wall of axilla D. It forms the inferior border of the axilla

The lateral pectoral nerve supplies only the lateral portion of the sternal head

The levator scapulae is innervated by: a. C3 & C4 nerve roots b. The dorsal scapular nerve c. Both d. Neither

c. Both