Musculoskeletal LECTURE Midterm FA 2019 Q2

All of the following statements correctly describe the radial nerve EXCEPT:

All of the muscles innervated by the radial nerve have extension action at the elbow joint

Both the thenar and hypothenar compartments contain:

An ABductor, a flexor and an opponens muscle

Which of the following numbered muscle can adducts the thumb? A.) 1 B.) 2 C.) 3 D.) 4 E.) 5

B.) 2

Which of the following numbered "cutaneous nerve distribution area" represent C8 dermatome? A.) 3 & 8 B.) 2 & 12 C.) 2& 3 D.) 6 & 8 E.) 5 & 10

B.) 2 & 12

Which of the following numbered nerve, innervated the medial surface of the arm? A.) 1 B.) 10 C.) 4 D.) 8 E.) 2

C.) 4

All of the following are associated with the Quadrangular space EXCEPT:

Circumflex scapular vessels

Which of the following muscle is NOT important in either flexion or adduction at the shoulder joint? A.) Latissimus Dorsi B.) Teres Major C.) Coracobrachialis D.) Trapezius E.) Deltoid

D.) Trapezius

Which of the following statements about the suboccipital region is NOT true:

Deep within the suboccipital triangle, vertebral artery passes through the atlanto axial membrane and dura mater to enter the cranial cavity

Atrophy or wasting of the rhomboid muscles, on one side, would indicate a lesion to which of the following nerves?

Dorsal scapular

The radius is rotated over the ulna by the: A.) Pronator teres muscle B.) Supinator muscle C.) Biceps brachii muscle D.) Brachioradialis muscle E.) A and D of the above

E.) A (Pronator teres) and D (Brachioradialis muscle) of the above

Injury to the radial nerve within the radial groove of the humerus would result in: A.) A total loss of extension at the interphalangeal joints B.) A sensory loss on the lower lateral surface of the arm C.) A loss in the ability to supinate the flexed forearm D.) A total loss of extension at the MP joints E.) Both B and D

E.) Both B and D

Initiation of abduction of the upper limb is a function of the __________ muscle. A.) Trapezius B.) Serratus anterior C.) Rhomboids D.) Deltoid E.) None of the above

E.) None of the above

Which of the following statement(s) is TRUE regarding the Latissimus Dorsi muscle: A.) Inserts on the medical lip of the intertubercular groove of the humerus B.) Medially rotates, extends and abducts the arm at the shoulder joint C.) Is innervated by the lower subscapular nerve D.) Is classified as one of the rotator cuff muscles E.) None of the above

E.) None of the above

Which of the illustrated muscle/s can extend and rotate the head on the same side when acting IPSILATERALLY? A.) 2 & 3 B.) 3 & 4 C.) 1 & 4 D.) 2 & 4 E.) None of the above

E.) None of the above

The suboccipital nerve:

Emerges superior to the dorsal arch of the atlas

Both lateral rotators of the humerus, infraspinatus and teres minor muscles, are innervated by branches of the brachial plexus' components that basically originate from cervical segments 7 and 8. T/F?

False

Both nerves to the serratus anterior and latissimus dorsi, are branches of the brachial plexus' posterior cord. T/F?

False

In the cubital fossa, the brachial artery is located lateral to the tendon of biceps brachii. T/F?

False

Radial nerve, in addition to its innervation of the arm's extensor compartment muscles, it also conducts the sensation of touché, temperature and pain from the upper lateral aspect of the arm. T/F?

False

Which of the following muscles working together produce ADDUCTION at the wrist?

Flexor carpi ulnaris and extensor carpi ulnaris

The trapezius muscle (either in part or as a whole):

Function in elevation, retraction and superior rotation of the scapula.

The deep palmar arterial arch:

Gives off branches toward the digits known as palmar metacarpal arteries

Which of the following will NOT be a characteristic of that hand, following the ulnar nerve damage at the elbow?

Hyperflexion at the MP joints

The Bicipital Aponeurosis is characterized by all of the following EXCEPT:

Is a lateral expansion of the biceps tendon

The transversospinalis is a muscle group characterized by all of the following EXCEPT:

It flexes the vertebral column when acting on both sides.

The deep brachial (profunda) artery:

It's collateral branches anastomose with recurrent branches around the elbow joint

Matching of muscles and innervation: Second Lumbrical

Median nerve

Which of the following vessels accompany radial nerve or its superficial and deep branches?

Profunda brachii and radial

Which of the following is NOT true about the anterior side of the wrist?

Radial artery is located medial to the flexor carpi radialis tendon

Matching of muscles and innervation: Abductor pollicis longus

Radial nerve (deep branch)

Which nerves does NOT supply a muscle that moves the middle finger?

Second common palmar digital nerve

All of the following of the deep back muscles when acting on one side of the trunk play a role in bending and rotating the vertebral column IPSILATERALLY EXCEPT:

Semispinalis thoracis

Damage to the median nerve at the carpal tunnel will result in all of the following EXCEPT:

Sensory loss of the lateral surface of the palm

Superior rotation of the scapula is accomplished by which of the following muscles?

Serratus anterior and trapezius

The following muscles (all paired) attach to the spinous process of the axis (C2) EXCEPT:

Splenius cervicis

The most powerful medial rotator of the humorous is the:

Subscapularis

Abduction of the arm is best accomplished by which of the following muscles?

Supraspinatous and deltoid

Posterior wall of the axilla is formed by:

Teres MAJOR, subscapularis and Latissimus dorsi muscles

The rotator cuff of the shoulder consists of which of the following muscles' aponeurosis?

Teres MINOR, infraspinatus, supraspinatus, and subscapularis

The Thenar compartment of the hand contains all of the following EXCEPT:

The first lumbrical muscle

The cords of the brachial plexus are named for their position with respect to:

The second part of the auxiliary artery

Which of the following is NOT true of the deep back muscles:

Those in the splenius group, when acting on one side of the body, rotate the ear to the opposite side.

All of the intrinsic muscles of the back are separated from the other back muscles by the thoracolumbar fascia, and innervated locally by the dorsal rami branches of the spinal nerves. T/F?

True

Among the three cutaneous nerves that reach the fingers, only the radial & median nerves have their sensory endings on both sides of the hands. T/F?

True

Both C1 and C2 dorsal rami emerge dorsal, they not only innervated obliquus capitis inferior, but also innervated the muscle that roofs the suboccipital triangle. T/F?

True

Both teres major and subscapularis muscles, which have similar function across the shoulder joint, are innervated by branches from the same chord of the brachial plexus. T/F?

True

Proximal to the wrist, both ulnar and median nerves give off the cutaneous branches to the corresponding palmar surfaces. T/F?

True

Matching of muscles and innervation: Medial half of flexor digitorum profundus

Ulnar nerve

Matching of muscles and innervation: First dorsal interosseous

Ulnar nerve (deep branch) 1

Matching of muscles and innervation: Opponens digiti minimi

Ulnar nerve (deep branch) 2