Nerves (O and Inn)

Question 1

musculocutaneous origin

Answer 1

C5, C6, C7

Question 2

musculocutaneous innervation

Answer 2

coracobrachialis
biceps brachii
brachialis
(anterior arm)

Question 3

median origin

Answer 3

C6, C7, C8, T1 (sometimes C5)

Question 4

median innervation

Answer 4

anterior forearm except 1 1/2 on ulnar side
in hand: 3 thenar muscles and 2 radial lumbricals
(thumb, pointer, middle, half of ring)

Question 5

ulnar origin

Answer 5

C7, C8, T1

Question 6

ulnar innervation

Answer 6

1 1/2 muscles on ulnar side anterior forearm
(flexi carpi ulnaris, 1/2 flexi digitorum profundus)
entire hand except those by the median
(half of ring, pinkie)

Question 7

radial origin

Answer 7

C5, C6, C7, C8, T1

Question 8

radial innervation

Answer 8

entire posterior arm and forearm

cutaneous over most of the posterior hand

Question 9

axillary origin

Answer 9

C5, C6

Question 10

axially innervation

Answer 10

deltoid, teres minor, skin over deltoid

Question 11

intercostal nerves (12 pairs) origin

Answer 11

posteriorly

Question 12

intercostal nerves innervate

Answer 12

internal, external, and innermost intercostals and the transverse thoracis

Question 13

superior laryngeal nerve info

Answer 13

• branch of the vagus

- sensory and motor of extrinsic laryngeal muscles

Question 14

inferior laryngeal nerve info

Answer 14

• branch of the recurrent laryngeal nerve

- primary motor nerve for intrinsic laryngeal muscles

Question 15

recurrent laryngeal nerve info

Answer 15

• branch of vagus (under aorta)

- primary motor nerve to intrinsic laryngeal muscles