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10 Cards in this Set
- Front
- Back
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What are the four muscles that make up the rotator cuff?
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Supraspinatus
Infraspinatus Teres Minor Subscapularis |
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What muscle is responsible for the first 15 degrees of abduction of the arm?
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Supraspinatus
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What muscle is responsible for 15 to 90 degrees of abduction of the arm?
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Deltoid
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What muscle is responsible for over 90 degrees of abduction of the arm?
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Trapezius
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What is the action of the Deltoid?
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Adducts the arm past 15 degrees
Gives the shoulder its rounded appearance |
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What is the action of the Teres Major?
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Adducts and medially rotates the arm
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What is the action of the Teres Minor?
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Assists lateral rotation of the arm and and adduction
( hidden by the Deltoid |
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What is the action of the Supraspinatus?
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Initiates arm abduction
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What is the action of the Infraspinatus?
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Laterally Rotates the arm
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What is the action of the Subscapularis?
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Primary medial rotation of the arm; Also adducts
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