Upper limb random anatomy

Question 1

The infraspinatus is innervated by which nerve roots?

Answer 1

C5 and C6

Question 2

Which nerve is at risk of damage in medial epicondyle fractures?

Answer 2

Ulnar nerve

Question 3

Which nerve supplies the deltoid muscle?

Answer 3

Axillary nerve (C5, C6)

Question 4

Describe the position of the ulnar nerve at the elbow.

Answer 4

Runs posterior to the medial epicondyle

Question 5

Winging of the scapula is caused by weakness of which muscles?

Answer 5

Serratus anterior (long thoracic nerve).

Question 6

The extensor retinaculum attaches laterally to what?

Answer 6

Radius

Question 7

The extensor retinaculum attaches medially to what?

Answer 7

Triquetrum and pisiform carpal bones

Question 8

Lunate dislocation can damage which nerve?

Answer 8

Median nerve

Question 9

The ulnar artery forms which palmar arch?

Answer 9

Superficial palmar arch

Question 10

The radial artery supplies which palmar arch?

Answer 10

Deep palmar arch

Question 11

Wartenberg’s sign is suggestive of what?

Answer 11

An ulnar nerve lesion

Question 12

Supraspinatus is innervated by which nerve?

Answer 12

Suprascapular nerve

Question 13

Which 2 nerves does the brachialis receive innervation from?

Answer 13

Musculocutaneous
Radial

Question 14

What is the innervation of the subscapularis?

Answer 14

Subscapular nerves

Question 15

What structures are contained within the anatomical snuff box?

Answer 15

Cephalic vein
Radial artery
Superficial branch radial nerve

Question 16

All interossei of the hand are innervated by which nerve?

Answer 16

Deep branch of the ulnar nerve.

Question 17

The empty can test is a can for which muscle?

Answer 17

Supraspinatus

Question 18

Muscles of the hypothenar eminence are innervated by which branch of the ulnar nerve?

Answer 18

Deep branch of ulnar nerve.

Question 19

What is the main function of the dorsal interossei?

Answer 19

Abduct fingers away from middle finger.

Question 20

The musculocutaneous nerve is derived from which nerve roots?

Answer 20

C5, C6, C7

Question 21

Which nerve supplies the deep flexor muscles?

Answer 21

Anterior interosseous nerve

Question 22

The lift-off test tests which muscle?

Answer 22

Subscapularis.