Anatomy - Upper Limb Neurovasculature

Question 1

Which muscles are innervated by the musculocutaneous nerve?

Answer 1

Biceps brachii
Brachialis
Coracobrachialis

Question 2

Which muscles are innervated by the axillary nerve?

Answer 2

Deltoid

Teres minor

Question 3

Which muscles are innervated by the radial nerve?

Answer 3

Triceps brachii

Extensor muscles in the posterior forearm

Question 4

Which muscles are innervated by the median nerve?

Answer 4

Flexor muscles in the anterior forearm (except flexor carpi ulnaris and the medial half of flexor digitorum profundus)
Thenar muscles
Lateral two lumbricals

Question 5

Which muscles are innervated by the ulnar nerve?

Answer 5

Muscles of the hand (except thenar muscles and the lateral two lumbricals)
Flexor carpi ulnaris
Medial half of flexor digitorum profundus

Question 6

Which spinal nerve roots make up the brachial plexus

Answer 6

C5 - T1

Question 7

Name the three trunks of the brachial plexus

Answer 7

Superior trunk
Middle trunk
Inferior trunk

Question 8

Name the three cords of the brachial plexus

Answer 8

Lateral cord
Posterior cord
Medial cord

Question 9

Name the five branches of the brachial plexus and give their roots

Answer 9

Musculocutaneous nerve (C5 - C7)
Axillary nerve (C5 - C6)
Radial nerve (C5 - T1)
Median nerve (C5 - C6 and C8 - T1)
Ulnar nerve (C8 - T1)