brachial plexus

Question 1

nerves/trunks = which vertebrae

Answer 1

C5-T1

Question 2

shoulder
elbow
wrist
hand

C5-T1 nerve innervation

Answer 2

C5 = shoulder
C6 = elbow
C7 = wrist
C8 & T1 = hand

Question 3

trunk 1,2,3 (superior, middle, inferior) are made by which C5-T1 nerves

Answer 3

trunk 1 = C5-6
trunk 2 = C7
trunk 3 = C8 & T1

Question 4

which nerve does dorsal scapular nerve come off of

Answer 4

C5

Question 5

which n. does long thoracic come off of

Answer 5

C5-7

Question 6

WHICH branches are from all 5 nerves

Answer 6

median and radial

Question 7

musculoctaneous
ulnar branches come from

and why more sensitive to damage?

Answer 7

ulnar N. branch -> from C8 & T1 (bottom 2)

musculocutaneous -> top 3 (C5-7)

less sources = more sensiitive to damage, median and radial nerve can function to some capacity even despite compression

Question 8

lateral cord = which roots

Answer 8

C5-6

Question 9

POSTERIOR cord =

Answer 9

all roots

Question 10

medial cord =

Answer 10

C8, T1