Upper Extremity - Innervation

Question 0

What innervates the latissimus dorsi?

Answer 0

Thoracodorsal (C6 - C8)

Question 1

What innervates the trapezius?

Answer 1

Spinal accessory nerve; C3 and C4 nerves (proprioceptive)

Question 2

What innervates the deltoid?

Answer 2

Axillary nerve (C5 - C6)

Question 3

What innervates the supraspinatus?

Answer 3

Suprascapular nerve (C5 - C6)

Question 4

What innervates the infraspinatus?

Answer 4

Suprascapular nerve (C5 - C6)

Question 5

What innervates the teres major?

Answer 5

Lower subscapular nerve (C6 - C7)

Question 6

What innervates the teres minor?

Answer 6

Axillary nerve (C5 - C6)

Question 7

What innervates the subscapularis?

Answer 7

Lower and upper subscapular nerves (C5 - C6)

Question 8

What innervates the pectoralis major?

Answer 8

Lateral and medial pectoral nerves (C5 - C8 and T1)

Question 9

What innervates the biceps brachii?

Answer 9

Musculocutaneous nerve (C5 - C6)

Question 10

What innervates the coracobrachialis?

Answer 10

Musculocutaneous nerve (C6 - C7)

Question 11

What innervates the brachialis?

Answer 11

Musculocutaneous nerve (C5 - C6) and branch of radial nerve (C7)

Question 12

What innervates the triceps brachii?

Answer 12

Radial nerve (C7 - C8)

Question 13

What innervates the anconeus?

Answer 13

Radial nerve (C7 - C8)

Question 14

What innervates the pronator teres?

Answer 14

Median nerve (C6 - C7)

Question 15

What innervates the pronator quadratus?

Answer 15

Median nerve (C8 and T1)

Question 16

What innervates the flexor carpi radialis?

Answer 16

Median nerve (C6 - C7)

Question 17

What innervates the palmaris longus?

Answer 17

Median nerve (C6 - C7)

Question 18

What innervates the flexor carpi ulnaris?

Answer 18

Ulnar nerve (C7 - C8)

Question 19

What innervates the flexor digitorum superficialis?

Answer 19

Median nerve (C7 - C8 and T1)

Question 20

What innervates the flexor digitorum profundus?

Answer 20

Radial: Median nerve (C8 - T1)
Ulnar: Ulnar nerve (C8 - T1)

Question 21

What innervates the flexor pollicis longus?

Answer 21

Median nerve (C7 - T1)

Question 22

What innervates the supinator?

Answer 22

Deep branch of the radial nerve (C5 - C6)

Question 23

What innervates the brachioradialis?

Answer 23

Radial nerve (C5 - C6)

Question 24

What innervates the extensor carpi radialis longus?

Answer 24

Radial nerve (C6 - C7)

Question 25

What innervates the extensor carpi radialis brevis?

Answer 25

Deep branch of radial nerve (C7 - C8)

Question 26

What innervates the extensor digitorum?

Answer 26

Posterior interosseus branch of the radial nerve (C7 - C8)

Question 27

What innervates the extensor digit minimi?

Answer 27

Posterior interosseus branch of the radial nerve (C7 - C8)

Question 28

What innervates the extensor carpi ulnaris?

Answer 28

Posterior interosseus branch of the radial nerve (C7 - C8)

Question 29

What innervates the abductor pollicis longus?

Answer 29

Posterior interosseus branch of the radial nerve (C7 - C8)

Question 30

What innervates the extensor pollicis brevis?

Answer 30

Posterior interosseus branch of the radial nerve (C7 - C8)

Question 31

What innervates the extensor pollicis longus?

Answer 31

Posterior interosseus branch of the radial nerve (C7 - C8)

Question 32

What innervates the extensor indicis?

Answer 32

Posterior interosseus branch of the radial nerve (C7 - C8)

Question 33

What innervates the abductor pollicis brevis?

Answer 33

Recurrent branch of the median nerve (C8 - T1)

Question 34

What innervates the flexor pollicis brevis?

Answer 34

Recurrent branch of the median nerve (C8 - T1)

Question 35

What innervates the opponens pollicis?

Answer 35

Recurrent branch of the median nerve (C8 - T1)

Question 36

What innervates the adductor pollicis?

Answer 36

Deep branch of the ulnar nerve (C8 - T1)

Question 37

What innervates the abductor digiti minimi?

Answer 37

Deep branch of the ulnar nerve (C8 - T1)

Question 38

What innervates the flexor digiti minimi?

Answer 38

Deep branch of the ulnar nerve (C8 - T1)

Question 39

What innervates the opponens digiti minimi?

Answer 39

Deep branch of the ulnar nerve (C8 - T1)

Question 40

What innervates the lumbrical muscles?

Answer 40

Lumbricals 1 & 2: Median nerve (C8 - T1) Lumbricals 3 & 4: Deep branch of the ulnar nerve (C8 - T1)

Question 41

What innervates the palmar interossei muscles?

Answer 41

Deep branch of the ulnar nerve (C8 - T1)

Question 42

What innervates the dorsal interossei muscles?

Answer 42

Deep branch of the ulnar nerve (C8 - T1)