The Axilla & Brachial Plexus III Flashcards Preview

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Flashcards in The Axilla & Brachial Plexus III Deck (20):
1

muscles connecting the upper limb to the vertebral column (5)

trapezius
latissimus dorsi
levator scapulae
rhomboid muscles

2

muscles connecting the upper limb to the vertebral column:
trapezius:

nerve(s)

action(s)

accessory nerve (CN XI)

elevate the scapula
retract the scapula
depress the scapula
upward rotation of the scapula (abduction)

3

muscles connecting the upper limb to the vertebral column:
latissimus dorsi:

nerve(s)

action(s)

thoracodorsal n

extends, adducts, & medially rotates the humerus

4

muscles connecting the upper limb to the vertebral column:
levator scapulae:

nerve(s)

action(s)

dorsal scapular n
ventral rami C3 & C4

elevates the scapula
tilts the glenoid cavity downward
retract the scapula

5

muscles connecting the upper limb to the vertebral column:
rhomboid muscles:

nerve(s)

action(s)

dorsal scapular n

retract the scapula
rotate the scapula inferiorly

6

muscles connecting the upper limb tot he throacic wall (3)

serratus anterior m
pectoral m's
subclavius m

7

muscles connecting the upper limb tot he throacic wall:
serratus anterior:

nerve(s)

action(s)

long thoracic n

protracts the scapula
fixes the scapula
rotates the glenoid cavity upward

8

the scapular muscles (6)

intrinsic ___ muscles

deltoid m
supraspinatous m
infraspinatous m
teres minor m
teres major m
subscapularis m

shoulder

9

the scapular muscles:
deltoid muscle:

nerve(s)

action(s)

axillary n

flex & medially rotate the humerus
abduct the humerus
extend & laterally rotate the humerus

10

the scapular muscles:
supraspinatous:

nerve(s)

action(s)

suprascapular n

abducts the humerus

11

the scapular muscles:
infraspinatous:

nerve(s)

action(s)

suprascapular n

laterally rotates the humerus

12

the scapular muscles:
teres minor:

nerve(s)

action(s)

axillary n

laterally rotates the humerus

13

the scapular muscles:
teres major:

nerve(s)

action(s)

lower subscapular n

extends, adducts, & medially rotates the humerus

14

the scapular muscles:
subscapularis:

nerve(s)

action(s)

upper & lower subscapular n's

medially rotates the humerus

15

quadrangular space:
borders:

superior: ___ m

inferior: ___ m

medial: long head of the ___ m

lateral: surgical neck of the ___

teres minor

teres major

long head of the triceps brachii

surgical neck of the humerus

16

quadrangular space:
contents:

nerve (1)

artery (1)

axillary n

posterior circumflex humeral a

17

triangular space:
borders:

muscles (3)

teres minor
teress major
long head of triceps brachii

18

triangular space:
contents:

vessels (or their branches) (1)

circumflex scapular vessels (or their branches)

19

traingular interval:
borders:

muscles (2)

shaft of the ___

teres major
long head of the triceps brachii

shaft of the humerus

20

triangular interval:
contents:

nerve (1)

artery (1)

radial n

profunda brachii a

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