brachial plexus Flashcards Preview

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Flashcards in brachial plexus Deck (27)
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1
Q

medial to lateral divisions

A

Roots
Trunks
Divisions
Cords

2
Q

superior trunk

A

C5 and C6

3
Q

middle trunk

A

C7

4
Q

inferior trunk

A

C8 and T1

5
Q

cords are in relationship to?

A

axillary artery

6
Q

lateral cord

A

anterior divisions of superior and middle trunks

C5,C6,C7

7
Q

medial cord

A

anterior division of inferior trunk

C8 and T1

8
Q

posterior cord

A

posterior division of all 3 trunks

C5-T1

9
Q

what nerve branches off the C5 root?

A

dorsal scapular

10
Q

what muscles does the dorsal scapular supply?

A

rhomboids

levator scapula

11
Q

what nerve is formed from the C5-C7 roots?

A

long thoracic

12
Q

what muscle does the long thoracic nerve supply?

A

serratus anterior

13
Q

what nerves branch off the superior trunk?

A

suprascapular
nerve to subclavius

C5 and C6

14
Q

what nerves are off the lateral cord?

A

lateral pectoral
musculocutaneous
median

C5, C6, C7

15
Q

what nerves are off the medial cord?

A
ulnar 
median 
medial pectoral 
medial cutaneous nerve of the forearm 
medial antebrachial 

C8 and T1

16
Q

what nerves are off the posterior cord?

A
axillary
radial
superior subscapular 
inferior subscapular 
thoracodorsal

all roots

17
Q

what nerve supplies the pectoralis major only?

A

lateral pectoral- lateral cord

C5, C6, C7

18
Q

what muscles does the musculocutaneous nerve supply?

A

coracobrachialis
brachialis
biceps brachii

lateral cord- C5, C6, C7

19
Q

what does the musculocutaneous nerve continue as?

A

lateral cutaneous nerve of the forearm

20
Q

what nerve supplies both the pec major and minor?

A

medial pectoral nerve- medial cord

C8 and T1

21
Q

what 2 muscles of the forearm does the ulnar nerve supply?

A

flexor carpi ulnaris
flexor digitorum profundus- medial half

C8, T1 sometimes C7

22
Q

what do the sensory branches of the ulnar nerve supply?

A

ulnar side posterior hand
hypothenar eminence
palmar side- little finger and half of ring finger

23
Q

what is the sensory supply of the median nerve?

A

palmar side- half of 2nd digit, 3,4 and part of thumb

tips of 2-4 digits

24
Q

what nerve supplies the teres major?

A

inferior subscapular

25
Q

what muscles does the axillary nerve supply?

A

deltoid

teres minor

26
Q

what is the sensory supply of the axillary nerve?

A

skin over lateral shoulder and upper arm

27
Q

what nerve supplies all muscles of the posterior compartment of arm and forearm?

A

radial nerve