nerve of the upper limb

Question 1

plexus

Answer 1

plait/ divide of nerves at ventral rami of spinal nerves

will redirect where the nerve runs

Question 2

Roots of the brachial plexus

Answer 2

C5 C6 C7 C8 T1

Question 3

TRUNKS

Answer 3

divide into anteior and posterior division

upper trunk= c5, c5

middle trunk- c7

lower trunk c8, t1

Question 4

divisions form

Answer 4

cords

Question 5

cords

Answer 5

from divisons

into lateral, posterior, medial

in relation to axilary artery

Question 7

anterior division

Answer 7

flexors, adductors, medial rotation

Question 8

posterior division

Answer 8

extensor, abductors, lateral rotators

Question 9

posterior cord runs into

Answer 9

branches are auxilary nerve runs deep into shoulder to supply the deltoid

radial nerve runs between tricpes heads

Question 10

radial nerve course

Answer 10

deep branch pierces into supinator muscle

superficial- continues along radial side of the forarm supplying skin of thumb and posterior hand

Question 11

lateral and medial cord courses

Answer 11

ulna nerve travels medial shaft of forarm

medial nerve- meddle of the forearm - through carpal tunnel

Question 12

root branches

Answer 12

dorsal scapular- rhomboids

long thoracic- seratus anteiror // root c7 c8

Question 13

trunk branches

Answer 13

suprascapular- supra and infra spinatus

subclaceus- subclavis deep to clavicle

Question 14

axilary nerve

Answer 14

C5/ C6

deltoid and teres mainor

skin over the deltoid/ shoulder joint

Question 15

radial nerve

Answer 15

C5, C6, C7,C8, T1
ALL UL extensors/ brachioradialis/ supinator. abductor poll

skin of posterior arm/ forearm/ hand/ wrist/ elbow joint

Question 16

musculocutaneous

Answer 16

C5, C6, C7, C8, T1

coracobrachialis/ bicep brachi/ brachialis

skin of lateral forearm/ base of thum and elbow joint

Question 17

median nerve

Answer 17

C5, C6, C7, C8, T1

fcr, pl, pronators, fds, fdp, fpl
abd pb, fpb, opp poll, lateral 2 lumbricals

skin of lateral 3 1/2 digits

corresponding palm

wrist and elbow joint

Question 18

ulnar nerve

Answer 18

C8 T1

FCU/ FDP/ PB/ ABD DM/ FDM/ OPP DM

MED 2 LUMBRICALS/ ADD POLL/ LAT 2 LUMBRICALS

SKIN OF MEDIAL 1/2 DIGITS

WRIST JOINT

Question 19

INTEROUSEUS NERVES

Answer 19

anterior and posterior

Question 20

course of musculocutaenous nerve

Answer 20

lateral cord of plexus c5, c, c7

lateral to axilary artery
desends pireces into coracobrachialis
runs between biceps/ brachialis
branches laterl cutenanous nerve of forarm

Question 21

course of axilary nerve

Answer 21

C5 C6

posterior to axilary artery
dives deep into shoulder
anterior branches winds around neck of humerus to supply deltoid

posterior- deltoid and tere mainor

superior and lateral cutenous

Question 22

course of the radial nerve

Answer 22

C5- T1

posterior cord/ posterior to axilary artery

ducks deep between the lateral and medial head of triceps

radial groove on humerus

enters anterior ar between brachalis and brachioradialis

crosses anchor elbow and divides

deep branch

posterior interoseus

Question 23

median nerve course

Answer 23

lateral- c5-c7
medial c8-t1

unite anterior to axilary artery
travels deep into bicep
run top of brachoalis
deep to bicipital apponeurois
cubital fossa
deep between pronator teres deep to fds
travels deep to flexor retinaculum via carpal tnunnel

branch into anterior interessus

Question 24

ulna nerve course

Answer 24

medial cord c8-t1

medial to axilary artery then brachial artery
anterior to tricpers
pass between medial epicondyle and olecranon process
enters anterior forarm through head of flexor carpi ulnarus

runs along fdp lat to ulnar artery

Question 25

lateral cord

Answer 25

pect major

Question 26

posterior cord

Answer 26

upper subscapularis

thoracodorsal- lat dorsi

lower scapular- lower sunscapularis teres major

Question 27

medial cord

Answer 27

medial pectoral- pec minor and pec major

medial cutaenous of arm

medial cuteanous of forearm

Question 28

suprascapular is a branch of what

Answer 28

the trunks