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Anatomy > Scapular Muscle Structure Info > Flashcards

Scapular Muscle Structure Info Flashcards

1
Q

deltoid attachments

A

from the clavicle, acromion, and spine of scapula to the deltoid tuberosity of humerus

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2
Q

deltoid actions

A

-flexion and medial rotation (anterior)
-abduction (primarily middle)
-extension & lateral rotation, horizontal extension (posterior) of humerus

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3
Q

deltoid innervation

A

axillary nerve

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4
Q

supraspinatus attachments

A

from the medial 2/3 of supraspinous fossa to the superior facet of the greater tubercle of the humerus & to shoulder joint capsule

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5
Q

supraspinatus actions

A

-initiates humeral abduction
-laterally rotates humerus
-stabilizes glenohumeral joint (reinforces superior aspect of joint capsule)

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6
Q

supraspinatus innervation

A

suprascapular nerve

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7
Q

infraspinatus attachments

A

from the medial 2/3 of infraspinous fossa to the middle facet of the greater tubercle of the humers & to shoulder joint capsule

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8
Q

infraspinatus actions

A

-lateral rotation of humerus
-stabilizes glenohumeral joint

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9
Q

infraspinatus innervation

A

suprascapular nerve

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10
Q

teres minor attachments

A

from the upper 2/3 of the dorsal surface of the lateral border of the scapula to the inferior facet of the greater tubercle of the humerus and to shoulder joint capsule

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11
Q

teres minor actions

A

-lateral rotation of humerus
-stabilizes glenohumeral joint

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12
Q

teres minor innervation

A

axillary nerve

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13
Q

subscapularis attachments

A

from the subscapular fossa to the lesser tubercle of the humerus

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14
Q

subscapularis actions

A

-medial rotation of humerus
-stabilizes glenohumeral joint

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15
Q

subscapularis innervation

A

upper and lower subscapular nerves

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16
Q

teres major attachments

A

from the dorsal surface of the inferior angle scapula and lower 1/3 of the lateral border of the scapula to the medial lip of the intertubercular sulcus of the humerus

17
Q

teres major actions

A

-humeral adduction, medial rotation, and extension

18
Q

teres major innervation

A

lower subscapular nerve

19
Q

deltoid spinal cord segment

A

C5-6

20
Q

supraspinatus s.c. segment

A

C4-6

21
Q

infraspinatus s.c. segment

A

C5-6

22
Q

teres minor s.c. segment

A

C5-6

23
Q

subscapularis s.c. segment

A

C5-6

24
Q

teres major s.c. segment

A

C5-6

25
Q

deltoid common s.c. segment

A

C5-6

26
Q

supraspinatus common s.c. segment

A

C4-6

27
Q

infraspinatus common s.c. segment

A

C5-6

28
Q

teres minor common s.c. segment

A

C5-6

29
Q

supscapularis common s.c. segment

A

C5-6

30
Q

teres major common s.c. segment

A

C5-6

Anatomy (5 decks)

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