Peripheral anatomy

Question 1

myotome C5?

Answer 1

shoulder abduction

Question 2

myotome C6?

Answer 2

elbow flexion wrist extension

Question 3

myotome C7?

Answer 3

elbow extension wrist flexion

Question 4

myotome C8?

Answer 4

finger flexion

Question 5

myotome T1?

Answer 5

finger abduction

Question 6

dermatome C5?

Answer 6

deltoid

Question 7

dermatome C6?

Answer 7

index finger

Question 8

dermatome C7?

Answer 8

middle finger

Question 9

dermatome C8?

Answer 9

little finger

Question 10

dermatome T1?

Answer 10

inner arm

Question 11

what cord does radial nerve come from?

Answer 11

posterior cord

Question 12

what cord does median nerve come from?

Answer 12

medial cord

Question 13

what cord does ulnar nerve come from?

Answer 13

medial cord

Question 14

what cord does musculocutaneous nerve come from?

Answer 14

lateral

Question 15

what nerve does axillary nerve come from?

Answer 15

posterior

Question 16

median nerve motor functions?

Answer 16

LOAF: lateral 2 lumbricals, opponens brevis, abductor pollicis brevis, felxor pollicis brevis

Question 17

whats the sensory innervation of median nerve?

Answer 17

1st, 2,nd, 3rd and lateral half of 4th digit

Question 18

whats the motor innervation of ulnar nerve?

Answer 18

intrinsic muscles of hand lumbricals, hypothenar and interossei

Question 19

whats the sensory innervation of ulnar nerve?

Answer 19

median half of 4th digit and 5th digit

Question 20

what muscles make up the shoulder girdle?

Answer 20

• trapezius
• serratus anterior
• rhomboids

Question 21

what can winging scapula be caused by?

Answer 21

nerve lesion or myopathy

Question 22

whats the most common nerve lesion of winging scapula and what muscle does it innervate?

Answer 22

• long thoracic
• serratus anterior

Question 23

whats the second most common nerve lesion of winging scapula and what muscle does it innervate?

Answer 23

• accessory nerve
• trapezius

Question 24

whats the least common nerve lesion of winging scapula and what muscle does it innervate?

Answer 24

• dorsal scapular nerve
• rhomboids

Question 25

whats the muscle that controls shoulder abduction and the nerve that innervates this muscle?

Answer 25

deltoid - axillary nerve

Question 26

whats the nerve root, trunk and cord for deltoid?

Answer 26

C5, upper trunk, posterior cord

Question 27

what cord

Question 28

what muscles involved in shoulder adduction?

Answer 28

Pectoralis major Latissimus dorsi

Question 29

what nerves innervate pectoralis major and latissimus dorsi?

Answer 29

pectoral nerves (PM) thoracodorsal (LD)

Question 30

what nerve roots innervate pectoral and throacodorsal nerves?

Answer 30

PM: C5-T1 LD: C6-C8

Question 31

what muscle and nerve is involved in elbow flexion?

Answer 31

biceps and musculcut.

Question 32

what nerve root, trunk and cord is involved in elbow flexion?

Answer 32

C6, upper trunk, lateral

Question 33

what muscle and nerve is involved in elbow extension?

Answer 33

triceps and radial

Question 34

what nerve root, trunk and cord innervate elbow extension?

Answer 34

C7, upper middle and lower trunk, posterior cord

Question 35

what muscle and nerve is involved in wrist extentension?

Answer 35

extensor carpi radialis and radial

Question 36

what nerve root, trunk and cord involved in wrist extension?

Answer 36

C7/8, upper and lower trunk, posterior cord

Question 37

what muscle and nerve involved in wrist flexion?

Answer 37

flexor carpi ulnairs, ulnar

Question 38

what nerve root, trunk and cord involved in wrist flexion?

Answer 38

C7/C8, middle and lower trunk, medial cord

Question 39

what muscle and nerve involved in finger flexion?

Answer 39

FDS/FDP and median (and ulnar)

Question 40

what nerve root, trunk and cord involved in finger flexion?

Answer 40

C8, lower trunk, medial cord

Question 41

what muscle and nerve involved in finger extension?

Answer 41

extensor digitorum and radial

Question 42

what nerve root, trunk and cord involved in finger? extension

Answer 42

C8, lower trunk, posterior cord

Question 43

what muscle and nerve involved in finger abduction?

Answer 43

dorsal interossei and ulnar

Question 44

what nerve root, trunk and cord involved in finger abduction?

Answer 44

T1, lower trunk and medial cord