Tri 2 - Extremities Exam 1 Questions
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 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
This muscle acts to flex and adduct the arm? A: Pectoralis minor B: Brachialis C: Biceps brachii 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.
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
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
The levator scapulae is innervated by: a. C3 & C4 nerve roots b. The dorsal scapular nerve c. Both d. Neither
c. Both
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 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
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
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
This muscle has a dual origin, a single insertion and dual innervation. A: Pectoralis major. B: Brachialis. C: Subscapularis. D: Anconeus.
A. Pectoralis major.
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
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
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 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 starting from an extended position is the: A. Brachialis B. Biceps brachii C. Coracobrachialis D. Brachioradialis
A. Brachialis
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 posterior circumflex humeral artery passes through which axillary space? A: Quadrangular space B: Triangular space C: Suprascapular notch D: Triangular interval
A. Quadrangular space
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
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 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
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
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
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 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 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 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.
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 circumflex scapular artery passes through which axillary space? A. Quadrangular space B. Triangular space C. Suprascapular notch D. Triangular interval
B. Triangular space
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 brachi muscle. C: Lateral head of the triceps brachii muscle. D: All of the above.
B. Long head of the triceps brachi muscle
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
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 carpal bone articulates with the radius? A. Trapezoid B. Scaphoid C. Hamate D. Capitate
B. Scaphoid
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
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
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 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
This structure allows for full extension at the elbow? A: radial fossa B: olecranon fossa C: coronoid fossa D: intertubercular groove
B. olecranon fossa
This muscle inserts on the floor of the intertubercular groove? A: Teres major B: Latissimus dorsi C: Pectoralis major D: Corachobrachialis
B: Latissimus dorsi
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
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
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
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
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
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
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
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
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
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
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
All of the following muscles are involved in arm flexion except: A. Biceps brachii B. Deltoid C. Coracobrachialis D. Brachialis
D. Brachialis
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
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.
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
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
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 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
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
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
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