Upper Exremity-General

Question 1

What muscles does the dorsal scapular n. (C4-5) innervate?

Answer 1

Levator scapulae
Rhomboids

Question 2

What muscles does the medial pectoral n. (C8-T1) innervate?

Answer 2

Pectoralis major (sternocostal)
Pectoralis minor

Question 3

What muscles does the upper subscapular n. (C5-6) innervate?

Answer 3

Subscapularis

Question 4

What muscles does the suprascapular n. (C4-6) innervate?

Answer 4

Supraspinatus
Infraspinatus

Question 5

What are the two cutaneous branches of the medial cord of the brachial plexus?

Answer 5

Medial cutaneous nerve of the forearm (C8-T1)
Medial cutaneous nerve of the arm (C8-T1)

Question 6

What muscles does the axillary n. (C5-6) innervate?

Answer 6

Deltoids
Teres minor

Question 7

What nerve besides the suprascapular n. comes off of the upper trunk and what does it innervate?

Answer 7

N. to the subclavius
Innervates subclavis m.

Question 8

What muscle does the long thoraic n. innervate and what are it’s spinal roots?

Answer 8

Latissimus dorsi
C5-C7

Question 9

What muscles does the lower subscapular n innervate and what are it’s spinal roots?

Answer 9

C5-6
Subscapularis
Teres major

Question 10

What are the three branches off the posterior chord of the brachial plexus?

Answer 10

Lower subscapularis
Uppersubscapularis
Thoracodorsal

Question 11

What does the thoracodorsal n. (C6-C8) innervate?

Answer 11

Latissimus dorsi

Question 12

What does the ulnar n. innervate and what are it’s spinal roots?

Answer 12

Flexor carpi ulnaris
Flexor digitorum profundus 4th & 5th digits
C7-T1

Question 13

What muscles does the musculocutaneous n. (C5-7) innervate?

Answer 13

Biceps brachii
Brachialis
Coracobrachialis

Question 14

What muscles 11 does the radial nerve (C5-T1) innervate?

Answer 14

Anaconeous
Triceps brachii
Abductor pollicis longus
Brachioradialis
Extensor carpi radialis brevis & longus
Extensor carpi ulnaris
Extensor digitorum
Extensor digiti minimi
Extensor indicis
Extensor pollicis brevis & longus
Supinator

Question 15

What nerve branches off of the median n? What does it innervate?

Answer 15

Anterior interosseous n.
Flexor pollicis longus
Pronator quadratus

Question 16

Wha does the median n. innervate? What are it’s spinal roots?

Answer 16

C5-T1
Flexor carpi radialis
Flexor digitorum profundus 2&3 digits
Flexor digitorum superficialis
Pronator teres

Question 17

What nerves have spinal nerve roots C5-C6?

Answer 17

n. to subclavius
upper subscapular n
lower subscapular n.
axillary n

Question 18

What nerves have spinal nerve roots C8-T1?

Answer 18

Medial pectoral
Medial cutaneous n. of arm
Medial cutaneous n. of forearm
Median root of median n.

Question 19

What nerves have spinal nerve roots C5-C7?

Answer 19

Long thoracic n.
Lateral pectoral n.
Musculocutaneous n.
Lateral root of median n.

Question 20

What’s so special about ansapectoralis nerve anyway?

Answer 20

Brings C7 innervation from lateral cord to medial cord all by itself!