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Gross Anatomy > Scapulo-Humeral Intrinsic Muscles > Flashcards

Scapulo-Humeral Intrinsic Muscles Flashcards

0
Q

Deltioid: Insertion

A

Deltoid tuberosity of humerus

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1
Q

Deltoid: Origin

A

Lateral 3rd of clavicle
Acromion of scapula
Spine of scapula

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2
Q

Deltoid: Innervation

A

Axillary Nerve

C5, C6

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3
Q

Action of Clavicular head of Deltoid?

A

Flex and medically rotate shoulder joint

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4
Q

Action of Acromial head of Deltoid?

A

Abduct shoulder joint

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5
Q

Action of Spinal head of Deltoid?

A

Extends and laterally rotate shoulder joint

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6
Q

Supraspinatus: Origin

A

Supraspinous fossa of scapula

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7
Q

Supraspinatus: Insertion

A

Superior facet of greater tubercle of humerus

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8
Q

Supraspinatus: Innervation

A

Suprascapular Nerve

C4-C6

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9
Q

Supraspinatus: Action

A

Stabilizes scapula by drawing inferiorly and anteriorly against thoracic wall

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10
Q

Infraspinatus: Origin

A

Infraspinous fossa of scapula

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11
Q

Infraspinatus: Insertion

A

Middle facet of greater tubercle of humerus

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12
Q

Infraspinatus: Innervation

A

Suprascapular Nerve

C5, C6

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13
Q

Infraspinatus: Action

A

Laterally rotate shoulder joint

Hold humeral head in glenoid cavity

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14
Q

Teres Minor: Insertion

A

Inferior facet of greater tubercle of humerus

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15
Q

Teres Minor: Innervation

A

Axillary Nerve

C5, C6

16
Q

Teres Minor: Action

A

Adducts and medially rotates shoulder joint

17
Q

Teres Minor: Origin

A

Medial part of lateral border of scapula

18
Q

Teres Major: Origin

A

Inferior part of lateral border of scapula

Posterior surface of inferior angle of the scapula

19
Q

Teres Major: Insertion

A

Medial lip of intertubercular sulcus of humerus

20
Q

Teres Major: Innervation

A

Lower Subscapular Nerve

C5, C6

21
Q

Teres Major: Action

A

Adducts and medially rotates shoulder joint

22
Q

Subscapularis: Origin

A

Subscapular fossa

23
Q

Subscapularis: Insertion

A

Lesser tubercle of humerus

24
Q

Subscapularis: Innervation

A

Upper and Lower Subscapular Nerves

C5 -C7

25
Q

Subscapularis: Action

A

Medially rotates and adducts shoulder joint

Holds humeral head in glenoid cavity

Gross Anatomy (9 decks)

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