Muscles of the rotator cuff Flashcards by Stuart Helster | Brainscape

Q

Origin of supraspinatus?

A

supraspinous fossa of scapula

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Q

Insertion of Supraspinatus?

A

Superior facet of greater tubercle of humerus

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Q

Innervation of the Supraspinatus?

A

Suprascapular nerve

C4-C6

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Q

Action of the supraspinatus?

A

Initiation abduction

first 15 degrees of abduction

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Q

Origin of Infraspinatus?

A

Infraspinous fossa of scapula

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Q

Insertion of Infraspinatus?

A

Middle facet of greater tubercle of humerus

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Q

Innervation of infraspinatus?

A

Suprascapular nerve

C4-C6

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Q

Action of Infraspinatus?

A

External rotation

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Q

Origin of teres minor?

A

Lateral border of scapula

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Q

Insertion of teres minor?

A

Inferior facet of greater tubercle of humerus

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Q

Innervation of teres minor?

A

Axillary nerve

C5, C6

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Q

Action of teres minor?

A

External rotation

Weak adduction

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Q

Origin of subscapularis?

A

Subscapular fossa of scapula

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Q

Insertion of Subscapularis?

A

Lesser tubercle of humerus

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Q

Innervation of subscapularis?

A

Subscapular nerve

C5, C6

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Q

Action of subscpularis?

A

Internal rotation

Q

Muscles of the rotator cuff?

A

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis