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Rotator cuff
Muscles of rotator cuff and actions
12
Anatomy
Undergraduate 3
05/29/2012

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Cards

Term
Supraspinatus: Location
Definition
Originates above the spine of the scapula, and inserts on the greater tuberosity of the humerus
Term
Supraspinatus: Actions
Definition
Abducts or elevates the shoulder joint.
Term
Supraspinatus: What it does
Definition
It also works with the other rotator cuff muscles to stabilize the head of the humerus in the glenohumeral joint, or shoulder joint.
Term
Infraspinatus: Location
Definition
Originates below the spine of the scapula, in the infraspinatus fossa, and inserts on the posterior aspect of the greater tuberosity of the humerus.
Term
Infraspinatus: Actions
Definition
Externally rotates the shoulder joint.
Term
Infraspinatus: What it does
Definition
It also works with the other rotator cuff muscles to stabilize the head of the humerus in the glenohumeral joint, or shoulder joint.
Term
Teres Minor: Location
Definition
Originates on the lateral scapula border and inserts on the inferior aspect of the greater tuberosity of the humerus.
Term
Teres Minor: Actions
Definition
Externally rotates the shoulder joint.
Term
Teres Minor: What it does
Definition
It also works with the other rotator cuff muscles to stabilize the head of the humerus in the glenohumeral joint, or shoulder joint.
Term
Subscapularis: Location
Definition
Originates on the anterior surface of the scapula, sitting directly over the ribs, and inserts on the lesser tuberosity of the humerus.
Term
Subscapularis: Actions
Definition
Works to depress the head of the humerus allowing it to move freely in the glenohumeral joint during elevation of the arm.
Term
Subscapularis: What it does
Definition
It also works with the other rotator cuff muscles to stabilize the head of the humerus in the glenohumeral joint, or shoulder joint.
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