term1 Definition1term2 Definition2term3 Definition3
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Supraspinatus
Orgin: Scapula (supraspinous fossa)
Insertion: Humerus (greater tubercle)
Action: Holds head of humerus stable in Glenwood cavity
Abducts arm (30 degrees)
Infraspinatus
Orgin: Scapula (infraspinous fossa)
Action: holds head of humerus stable in glenoid cavity
Rotates arm laterally
Teresa minor
Orgin: Scapula (lateral border)
Insertion: humerus (greater tubercle)
Subscapularis
Orgin: Scapula (subscaplar fossa)
Insertion: humerus (lesser tubercle)
Action: Holds head of humerus stable in glenoid cavity
Rotates arm medially
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