Muscles of the Rotator Cuff Flashcards by David V

Q

Supraspinatus: Origin and Insertion

A

Origin: Supraspinatus fossa of scapula

Insertion: On greater tubercle

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Q

Supraspinatus: Action and Innervation

A

Abducts arm and assists deltoid muscle in its full movement

Innervated by subscapular nerve

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Q

Infraspinatus: Origin and Insertion

A

Origin: Infraspinatus fossa of scapula

Insertion:Greater tubercle

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Q

Infraspinatus: Action and Innervation

A

Laterally rotates arm

Innervated by suprascapular nerve

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Q

Teres minor: Origin and insertion

A

Origin: Lateral border of scapula

Insertion: On greater tubercle

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Q

Teres Minor: Action and Innervation

A

Laterally rotates arm

Innervated by axillary nerve

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Q

Subscapularis: Origin and Insertion

A

Origin: Costal surface of scapula

Insertion: Lesser tubercle

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Q

Subscapularis: Action and Innervation

A

Medially rotates arm

Innervated by upper and lower subscapular nerves

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