Deck 8: Anatomy and Physiology: Shoulder, Arm, and Wrist Nerves and Muscles

Question 1

All of the following are true of EPL except

A)It inserts at the base of the proximal phalanx of the thumb
B)It forms the ulnar side of the anatomical snuff box
C)Its nerve supply is from the radial nerve
D)Its origin is from the posterior surface of the ulna and adjacent IO membrane
E)Its tendon passes beneath the extensor retinaculum of the wrist

Answer 1

It inserts at the base of the proximal phalanx of the thumb

Question 2

In abduction of the arm

A)The clavicle remains fixed
B)The scapula moves dorsally on the chest wall
C)Scapular movement is at first more rapid than movement of the humerus
D)The medial end of the clavicle moves downward on the intra-articular disc
E)Medial rotation of the humerus occurs

Answer 2

The medial end of the clavicle moves downward on the intra-articular disc

Question 3

Part of the rotator cuff of the shoulder is supplied by

A)A nerve formed from the root of C5,6,7
B)A branch of the upper trunk of the brachial plexus
C)A branch of the lateral cord of the brachial plexus
D)A nerve which passes through the triangular space
E)A branch of the medial cord of the brachial plexus

Answer 3

A branch of the upper trunk of the brachial plexus

Question 4

The stability of the shoulder is related to all of the following except

A)Glenoid labrum
B)Acromium process
C)Rotator cuff
D)Long head of the biceps
E)Deltoid

Question 5

The lunate articulates with all of the following except

A)Scaphoid
B)Triquetral
C)Capitate
D)Radius
E)Hamate

Question 6

Loss of sensation in the thumb and lateral forearm is consistent with an isolated injury to

A)Lateral cutaneous nerve of the forearm
B)Median nerve
C)Lateral cutaneous nerve of the arm
D)C6 root
E)C7 root

Question 7

The skin of the tip of the index finger is supplied by

A)The radial nerve only
B)The median nerve only
C)The ulnar nerve only
D)The radial and median nerves
E)The radial and ulnar nerves

Question 8

Following a laceration to the anterior surface of the wrist, a patient is unable to flex the PIPJ of his III finger when the other fingers are held in extension. Which tendon is divided

A)Palmaris longus
B)Flexor indicis
C)FDP
D)FDS
E)None of the above

Question 9

Paralysis of which nerve results in the inability to initiate abduction of the arm

A)The axillary nerve
B)The suprascapular nerve
C)The subscapular nerve
D)The dorsal scapular nerve
E)The thoracodorsal nerve

Question 10

The axilla

A)Communicates with the anterior triangle of the neck
B)Contains lymph nodes draining the upper limb and lateral chest wall
C)Has an anterior wall made up by the serratus anterior muscle
D)Has an apex bounded by the humerus, clavicle and scapula
E)Has no medial wall

Question 11

The brachial artery

A)Crosses anterior to the median nerve in the arm
B)Gives off the nutrient artery to the humerus
C)Lies deep to the biceps
D)Has the ulnar nerve on its medial side
E)Gives muscular branch to the triceps

Question 12

The elbow joint

A)Is supplied exclusively by the radial n
B)Permits flexion - extension and pronation - supination
C)Has a capsule which attaches in part to the radius
D)Communicates with the superior RUJ
E)None of the above

Question 13

The main stabilising factor of the sternoclavicular joint

A)The AC ligament
B)The costoclavicular ligament
C)The interclavicular ligament
D)The sternoclavicular ligament
E)The coracoclavicular ligament

Question 14

With respect to the thenar muscles

A)APB inserts into the base of the distal phalanx of the thumb
B)All arise from the flexor retinaculum
C)FPB is usually supplied by a branch of the ulnar nerve
D)APB has no role in the opposition of the thumb
E)Opponens pollicis is the most superficial muscle of the group

Question 15

The musculocutaneous nerve

A)Supplies brachioradialis
B)Terminates as the posterior IO n
C)Supplies all of brachialis
D)Fibres from C5,6,7 and 8
E)Arises from the lateral cord of the brachial plexus

Question 16

In the antecubital fossa

A)The ulnar nerve is on medial side
B)The median nerve is lateral to the brachial artery
C)The radial nerve is on the lateral side
D)All superficial veins are deep to the cutaneous nerve
E)The brachial artery is lateral to the biceps tendon

Question 17

With respect to the flexor retinaculum

A)It attaches to the scaphoid, hamate, pisiform and trapezium
B)The tendon of palmaris longus passes deep to it
C)The median nerve passes superficial to it
D)The ulnar artery passes deep to it
E)It is pierced by the tendon of FCU

Question 18

The clavicle

A)Is convex anteriorly throughout its entire length
B)Articulates laterally with the coracoid via the coracoclavicular ligament
C)Is crossed in its middle 1/3 by the subclavian vein
D)Forms part of the apex of the axilla
E)Has as its only inferior musculature attachment the muscle pectoralis major

Question 19

On the palmar aspect of the wrist

A)The median nerve lies between FCR and palmaris longus
B)The ulnar nerve passes deep to the medial aspect of the flexor retinaculum
C)The flexor tendons lie together in a complete synovial sheath
D)The radial artery may be palpated over the flexor retinaculum
E)FCR may be distinguished by the presence of musculature fibres

Question 20

In carpal tunnel syndrome which is unaffected by compression of the median n

A)The medial branch of the median nerve
B)Opponens pollicis
C)The lateral branch of the median nerve
D)Palmar branch of the median nerve
E)APB

Question 21

Regarding the median nerve , all are true except

A)It is formed by the union of 2 roots from the medial and lateral cords
B)In the arm it passes anterior to the brachial artery
C)It passes deep to the flexor retinaculum
D)It does not supply the part of FDP to III finger
E)Typically chronic compression results in wasting of the thenar eminence

Question 22

Regarding the extensor retinaculum of the wrist

A)It includes attachment to the ulna
B)It overlies 6 fibrous compartments
C)Tension of he retinaculum is reduced with pronation
D)It has the palmaris longus fused with it
E)Is pierced by ECRL

Question 23

Which of the following is a branch of the posterior cord of the brachial plexus

A)Dorsal scapular n
B)Long thoracic n
C)Musculocutaneous n
D)Ulnar n
E)Thoracodorsal n

Question 24

In the hand the deep palmar arch

A)Is normally incomplete
B)Is formed by the superficial branch of the ulnar artery
C)Crosses the palm 1cm distal to the superficial arch
D)Gives off 3 metacarpal arteries
E)Does not anastomose with the anterior carpal arch

Question 25

Regarding the interossei of the hand

A)They insert into the middle phalanges
B)The palmar interossei have 2 heads of origin
C)They are solely innervated by T1
D)There are 3 dorsal muscles
E)The palmar abduct