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Anatomy > Muscles Of Posterior Scapular Region OINA > Flashcards

Muscles Of Posterior Scapular Region OINA Flashcards

1
Q

Supraspinatus Origin

A

Medial 2/3 of the supraspinous fossa of the scapula & the deep fascia that covers the muscle

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2
Q

Supraspinatus Insertion

A

Most superior facet on the greater tubercle of the humerus

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3
Q

Supraspinatus Innervation

A

Suprascapular nerve (C5, C6)

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4
Q

Supraspinatus Action

A

Rotator cuff muscle
Participates in abduction of the glenohumeral joint
Stabilization of the glenohumeral joint

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5
Q

Infraspinatus Origin

A

Medial 2/3 of the infraspinous fossa of the scapula & the deep fascia that covers the muscle

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6
Q

Infraspinatus Insertion

A

Middle facet on posterior surface of the greater tubercle of the humerus

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7
Q

Infraspinatus Innervation

A

Suprascapular nerve (C5, C6)

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8
Q

Infraspinatus Action

A

Rotator cuff muscle
Lateral (external) rotation at the glenohumeral joint
Stabilization of the glenohumeral joint

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9
Q

Teres Minor Origin

A

Upper 2/3 of a flattened strip of bone on the posterior surface of the scapula immediately adjacent to the lateral border of the scapula

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10
Q

Teres Minor Insertion

A

Inferior facet on the posterior surface of the greater tubercle of the humerus

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11
Q

Teres Minor Innervation

A

Axillary nerve (C5,C6)

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12
Q

Teres Minor Action

A

Rotator cuff muscle
Lateral (external) rotation of the glenohumeral joint
Stabilization of the glenohumeral joint

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13
Q

Teres Major Origin

A

Elongate oval area on the posterior surface of the inferior angle of the scapula

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14
Q

Teres Major Insertion

A

Medial lip of the intertubercular sulcus on the anterior surface of the humerus

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15
Q

Teres Major Innervation

A

Inferior subscapular nerve (C5,C6,C7)

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16
Q

Teres Major Action

A

Medial (internal) rotation & extension of the arm at the glenohumeral joint
Stabilization of the glenohumeral joint

Anatomy (6 decks)

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