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COM - MSK > Scapula, Deltoid, Pex & Axilla > Flashcards

Scapula, Deltoid, Pex & Axilla Flashcards

1
Q

describe ribs 8-10

A

false ribs, vertebrochondral

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2
Q

which ribs are atypical

A

1,2,11,12

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3
Q

what innervates the breast?

what vascularizes it primarily?

A

ant. and lateral branches intercostal nerves 4-6

ant. intercostal, lateral thoracic, internal thoracic arteries

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4
Q

what attaches the breast to dermis?

A

Cooper’s ligaments

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5
Q

what is the venous drainage of the breast

A

lateral thoracic and medial mammary veins

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6
Q

what makes up the borders of the clavipectoral triangle

A

deltoid, pec major, middle 1/3 clavicle

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7
Q

what pierces the clavipectoral fascia?

what does it become?

A

cephalic vein, thoracoacromial a., lateral pectoral n.

suspensory ligament of axilla

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8
Q

what innervates pec major?

A

lateral and medial pectoral nerves (C5-T1)

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9
Q

what innervates pec minor?

what is its action?

A

medial pectoral n. (C8, T1)

pulls scapula inf. and ant. against post. thoracic wall

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10
Q

subclavius action?

A

anchors and depress clavicle

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11
Q

serratus ant action?

innervation?

A

protracts & rotates scapula, holds scapula against thorax

long thoracic nerve (C5,6,7)

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12
Q

what muscle divides the axillary a. into 3 parts?

A

pec minor

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13
Q

what comes off the 1st part of the axillary artery?

where is it located

A

sup. thoracic a.

medial/proximal

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14
Q

what comes off the 2nd part of axillary a.

located?

A

thoracoacromial trunk
-pectroal, acromial, deltoid, (clavicular) branches

posterior

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15
Q

what comes off the 3rd part of the axillary a.?

located?

A

subscapular a. (branches into thoracodorsal and circumflex scapular aa.)
ant. and post. circumflex humeral a.

distal/lateral

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16
Q

what becomes the axillary vein?

A

basillic v.

17
Q

apex of axilla?

A

FCS
1st rib
clavicle
scapula

18
Q

roof of axilla

A

CAPS
chest wall
ant. and post. axillary fold
skin & superficial fascia

19
Q

ant. wall of axilla

A

PP

pec major and minor

20
Q

post. wall axilla

A 
SLuTS
scapula
lats
teres major
subscapularis
21
Q

lateral wall axila

A

TiC
tendon of long head biceps
intertubercular suclus
coracobrachialis tendon

22
Q

where is the retromammary space located?

A

between the breast and pectoral fascia

23
Q

deltoid action

innervation

A

flex, medially rotates, abducts, extends, and laterally rotates humerus

axillary n. (C5, C6)

24
Q

what action can’t the deltoid do?

A

adduct

25
Q

teres major action?

innervation

A

adducts and medially rotates humerus

lower subscapular n. (C5, C6)

26
Q

supraspinatus action

innervation

A

works w/deltoid in abduction of humerus to about 15 degrees, stabilize shoulder joint

suprascapular n. (C4,5,6)

27
Q

what does impingement syndrome involve?

what causes it?

A

supraspinatus tendon and/or subacromial bursa

repetitive overhead actions, bone spurs, weird acromion

28
Q

subscapularis action

innervation

A

medially rotates and ADDucts humerus, hold humeral head in place

upper and lower subscapular nerves (C5, 6, 7)

29
Q

what is the largest and strongest rotator cuff muscle?

what can injury in this muscle lead to?

A

subscapularis

bicipital tendon instability and biceps tendonitis

30
Q

what holds the the long tendon of biceps brachii in the intertubercular groove?

A

transverse ligament

31
Q

infraspinatus action

innervation

A

laterally rotate humerus, holds it in place

suprascapular n. (C5, C6)

32
Q

teres minor action

innervation

A

laterally rotate humerus, holds head in place

axillary n. (C5, C6)

33
Q

what does the thyrocervical trunk branch into?

A

transverse cervical a. (superficial branch and deep branch aka dorsal scapular a.)

suprascapular a.
ascending cervical a.
inferior thyroid a.

34
Q

part 2 of subclavian a.?

A

cost of deep dish supreme pizza?
costocervical a. trunk
-supreme intercostal a.
-deep cervical a.

35
Q

quadrangular space?

contents?

A

teres minor and major, long head and lateral head(surgical neck of humerus) of triceps

axillary n.
posterior circumflex humeral artery

36
Q

triangular space

contents

A

teres major and minor, long head triceps
-sup. to triangular interval

circumflex scapular a.

37
Q

triangular interval

contents

A

teres major, long head and lateral head triceps

radial a. and deep brachial a.

COM - MSK (12 decks)

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