Nerves

Question 1

Axillary nerve branch of?

Answer 1

posterior cord

Question 2

Axillary nerve receives fibers from?

Answer 2

C5 and C6

Question 3

Axillary nerve nerves exits the axillary fossa ________, and winds around the?

Answer 3

Exits the axillary fossa posteriorly and winds around the surgical neck of the humerus

Question 4

Axillary nerve innervates what muscles?

Answer 4

Teres Minor and Deltoid

Question 5

Axillary nerve contributes to what movements?

Answer 5

1) Main function is abduction of the arm at the shoulder

2) some flexion, med/lat rotation, extension of arm

Question 6

Axillary nerve carries sensation from?

Answer 6

superolateral arm

Question 7

Ulnar nerve is a terminal branch of?

Answer 7

medial cord

Question 8

Ulnar nerve receives fibers from?

Answer 8

C8-T1

Question 9

Ulnar nerve descends posterior to

Answer 9

medial epicondyle of humerus

Question 10

There are NO branches of what nerve in the arm?

Answer 10

Ulnar nerve AND Median nerve

Question 11

Ulnar nerve innervates?

Answer 11

anteromedial 1.5 muscles of forarm and most intrinsic hand muscles

Question 12

Ulnar nerve contributes to what movements?

Answer 12

1) wrist flexion and adduction
2) medial digit flexion
3) most movement of hand

Question 13

Ulnar nerve carries sensation from?

Answer 13

skin of medial wrist, hand, and ulnar 1.5 digits on palmer AND dorsal surfaces

Question 14

Radial nerve is the terminal branch of?

Answer 14

posterior cord

Question 15

Radial nerve carries fibers from?

Answer 15

C5-T1

Question 16

Radial nerve passes posterior to humerus in? And then?

Answer 16

radial groove. And then goes through cubital fossa and divids into superficial (cutaneous) and deep (motor) branches.

Question 17

Radial nerve innervates?

Answer 17

all posterior arm and forearm muscles

Question 18

Radial nerve contributes to what movements?

Answer 18

1) extension of forearm
2) extension of forearm, hand, fingers
3) some supination
(extend wrist=bend back)

Question 19

Radial nerve carries sensation from?

Answer 19

posterior arm, forearm, and hand/first 3.5 digits (dorsolateral surface)
**NOT fingertips!

Question 20

Median nerve fibers come from?

Answer 20

lateral cord (C5-7) and medial cord (C8-T1)

Question 21

Median nerve innervates what muscles?

Answer 21

muscles of anterior forearm compartment and thenar intrinsic hand muscles

Question 22

Median nerve contributes to what movements?

Answer 22

wrist flexion and pronation, and thumb movement

Question 23

Median nerve carries sensation from?

Answer 23

lateral palm and 1st 3.5 digits on palmer side, as well as 1st digit fingertips

Question 24

Musculocutaneous nerve is from the terminal branch of?

Answer 24

lateral cord

Question 25

Musculocutaneous nerve carries fibers from?

Answer 25

C5-C7

Question 26

Musculocutaneous nerve in what muscles?

Answer 26

pierces coracobrachialis, descends between biceps brachii and brachialis and supplies all

Question 27

Musculocutaneous nerve controls what movements?

Answer 27

forearm flexion and some supination

Question 28

Musculocutaneous nerve carries sensation from?

Answer 28

lateral forearm

Question 29

posterior rami innervates what muscles?

Answer 29

splenius capitis, splenius cervicis, erector spinae, and transversospinalis

Question 30

Ulnar nerve innervates what in hand/wrist?

Answer 30

everything except: abductor pollicis brevis, flexor pollicis brevis, opponens pollicis, and lumbrical digits 1&2

Question 31

recurrent branch of median nerve innervates what in hand/wrist?

Answer 31

bductor pollicis brevis, flexor pollicis brevis, opponens pollicis, and lumbrical digits 1&2