Brachial Plexus Nerves & Innervations

Question 1

cranial pectoral nerve

Answer 1

superficial pectoral muscles

Question 2

caudal pectoral nerve

Answer 2

deep pectoral muscle

Question 3

long thoracic nerve

Answer 3

serratus ventralis muscle

Question 4

thoracodorsal nerve

Answer 4

latissimus dorsi muscle

Question 5

lateral thoracic nerve

Answer 5

cutaneus trunci muscle

panniculus reflex

Question 6

suprascapular nerve

Answer 6

supraspinatus muscle

infraspinatus muscle

Question 7

subscapular nerve

Answer 7

subscapularis muscle

Question 8

musculocutaneous nerve

Answer 8

biceps brachii muscle

brachialis muscle

Question 9

axillary nerve

Answer 9

1. teres major muscle
2. teres minor muscle
3. deltoideus muscle

Question 10

radial nerve

Answer 10

1. triceps brachii muscle
2. tensor fascia antebrachii muscle
3. anconeus muscle
4. extensor carpi radialis muscle
5. common digital extensor muscle
6. lateral digital extensor muscle
7. ulnaris lateralis muscle

Question 11

median nerve

Answer 11

1. flexor carpi radialis muscle
2. superficial digital flexor muscle
3. deep digital flexor muscle
4. pronator teres muscle
5. pronator quadratus muscle

Question 12

ulnar nerve

Answer 12

1. flexor carpi ulnaris muscle
2. deep digital flexor muscle
3. interosseous muscles

Question 13

autonomous zone of cutaneous innervation of the musculocutaneous nerve

Answer 13

medial aspect of the antebrachium

Question 14

autonomous zone of cutaneous innervation of the axillary nerve

Answer 14

over the lateral aspect of the brachium

over the cranial aspect of the antebrachium

Question 15

autonomous zone of cutaneous innervation of the radial nerve

Answer 15

over the craniolateral aspect of the antebrachium and the carpus

over the doral aspect of the forepaw

Question 16

autonomous zone of cutaneous innervation of the ulnar nerve

Answer 16

caudal aspect of the antebrachium

palmar surface of the carpus, metacarpus, and digits

lateral surface of the 5th digit