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Anatomy Week 1 > Muscles of Scapular and Deltoid Region MT > Flashcards

Muscles of Scapular and Deltoid Region MT Flashcards

1
Q

Subscapularis origin

A

Subscapular fossa

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2
Q

Subscapularis insertion

A

lesser tubercle of the humerus

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3
Q

subscapularis innervation

A

upper and lower subscapular nerves

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4
Q

Subscapularis action

A

Medial rotation of the arm

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5
Q

supraspinatus origin

A

supraspinous fossa

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6
Q

supraspinatus insertion

A

greater tubercle of the humerus (superior facet)

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7
Q

supraspinatus innervation

A

Suprascapular nerve (C5-C6)

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8
Q

Supraspinatus action

A

abduction 0-15 degrees

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9
Q

Infraspinatus origin

A

infraspinatus fossa

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10
Q

infraspinatus insertion

A

greater tubercle of the humerus (middle facet)

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11
Q

infraspinatus innervation

A

suprascapular nerve (C5-C6)

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12
Q

infraspinatus action

A

Lateral rotation of the arm

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13
Q

Teres Minor origin

A

upper lateral border of the scapula

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14
Q

Teres minor insertion

A

greater tubercle of the humerus (inferior facet)

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15
Q

teres minor innervation

A

axillary nerve (C5-C6)

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16
Q

teres minor action

A

lateral rotation of the arm

17
Q

Teres major origin

A

lower lateral border of the scapula

18
Q

teres major insertion

A

crest of the lesser tubercle of the humerus

19
Q

teres major innervation

A

lower subscapular nerve

20
Q

teres major action

A

medial rotation, adduction and extention of arm

21
Q

Deltoid origin

A

lateral margin of the scapular spine, acromion, and clavicle

22
Q

deltoid insertion

A

deltoid tuberosity of the humerus

23
Q

deltoid innervation

A

axillary nerve (C5-C6)

24
Q

deltoid action

A

abduction 15-100 degrees, ant. fibers medial rotation and flexion of the arm, post. fibers lateral rotation, and extention of the arm

25
Q

Pectoralis Major origin

A

clavicle, sternum and ribs 1-6

26
Q

Pectoralis major insertion

A

crest of the greater tubercle of the humerus

27
Q

pectoralis major innervation

A

medial and lateral pectoral nerves

28
Q

pectoralis major action

A

medial rotation, adduction and flexion of the arm

29
Q

Pectoralis minor origin

A

ribs 3-5

30
Q

pectoralis minor insertion

A

coracoid process of the scapula

31
Q

pectoralis minor innervation

A

medial pectoral nerve

32
Q

pectoralis minor action

A

protraction of the scapula

33
Q

serratus anterior origin

A

ribs 1-9

34
Q

serratus anterior insertion

A

medial border of the scapula

costal surface

35
Q

serratus anterior innervation

A

long thoracic nerve (C5-C7)

36
Q

serratus anterior action

A

protraction and superior rotation of the lateral angle of the scapula
holds scapula against the dorsal trunk

Anatomy Week 1 (7 decks)

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