MSK - Brachial Plexus Especially Flashcards Preview

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Flashcards in MSK - Brachial Plexus Especially Deck (34):
1

Upper Trunk

C5 C6

2

Middle Trunk

C7

3

Lower Trunk

C8, T1

4

Anterior Division

C5, C7, T1

5

Posterior Division

C6, C7, C8

6

Lateral Cord

musculocutaneous nerve
lateral root of median nerve

7

medial cord

medial root of medial nerve
ulnar nerve

8

posterior cord

axillary nerve
radial nerve

9

musculocutaneous nerve

C5,6,7
flexors

10

median nerve

flexors
C6,7,C8,T1

11

ulnar nerve

C8, T1
skin and forearm of hand

12

axillary nerve

C5,6
deltoid, teres minor
extensors

13

radial nerve

C5-8, T1
triceps
extensors

14

deltoid

arm abduction
axillary nerve

15

wrist drop

radial nerve

16

Erb Duchenne palsy/waiter's tip

upper trunk (C5,6)
infants during delivery
pronated forearm

17

Klumpke's palsy

inferior trunk (C8,T1)
atrophy of thenar and hypothenar muscles

18

ulnar claw

can't extend 4th and 5th digits

19

median claw

can't extend 2nd and 3rd digits

20

cutaneous innervation - palmar side

ulnar, median
very small amount of radial

21

cutaneous innervation - dorsal side

radial (thumb and and lower 2nd and 3rd fingers)
median - upper 2nd and third fingers
ulnar - the rest

22

cremaster muscle

part of internal oblique
pulls in testes when cold

23

tennis elbow muscle

extensor carpi radialis brevis

24

medially rotate arm

subscapularis

25

recurrent laryngeal nerve is branch of

vagus

26

muscles that vagus innervates

palatoglossus

27

palatoglossus innervation

vagus

28

spiral fracture

child abuse

29

most commonly injured muscle of rotator cuff

supraspinatus

30

rotator cuff

supraspinatus
infraspinatus
teres minor
subscapularis

31

opponens pollicis

innervated by median nerve

32

laterally rotate arm

infraspinatus

33

dORSAL INTEROSSEOUS MUSCLES

ABDUCT

34

palmar interosseous muscles

adduct