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BCD Gross Anatomy-
Shoulder Muscles
27
Anatomy
Graduate
09/05/2007

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Cards

Term
Deltoid insertion
Definition
Deltoid tuberosity of humerus
Term
deltoid origin
Definition
Clavicle, acromion, spine of scapula
Term
deltoid action
Definition
Flexes and medially rotate humerus (ant. Portion); abducts humerus (intermediate portion); extends and laterally rotates humerus (posterior portion)
Term
deltoid innervation
Definition
Axillary Nerve
Term
supraspinatous origin
Definition
Supraspinous fossa of scapula
Term
supraspinatous insertion
Definition
Greater tubercle of humerus
Term
supraspinatous action
Definition
Stabilizes shoulder joint; abducts humerus
Term
supraspinatous innervation
Definition
Suprascapular Nerve
Term
infraspinatous origin
Definition
Infraspinous fossa of scapula
Term
infraspinatous insertion
Definition
Greater tubercle of humerus
Term
infraspinatous action
Definition
Stabilizes shoulder joint; laterally rotates humerus at shoulder
Term
infraspinatous inervation
Definition
Suprascapular Nerve
Term
teres minor origin
Definition
Lateral (axillary) border of scapula
Term
teres minor insertion
Definition
Greater tubercle of humerus
Term
teres minor action
Definition
Stabilizes shoulder joint; laterally rotates humerus at shoulder
Term
teres minor inervation
Definition
Axillary Nerve
Term
teres major origin
Definition
Dorsal surface of lateral border of scapula, close to inferior angle
Term
teres major insertion
Definition
Medial lip of interturbercular sulcus (groove)
Term
teres major action
Definition
Adducts and medially rotates humerus at shoulder
Term
teres major inervation
Definition
Lower subscapular nerve
Term
origin of long head of triceps
Definition
Infraglenoid tubercle of scapula
Term
insertion of long head of triceps
Definition
olecranon process of ulna
Term
action of long head of triceps
Definition
extends and adducts humerus at shoulder; with other two heads, will extend forearm at elbow
Term
inervation of long head of triceps
Definition
Radial Nerve
Term
Subscapularis origin
Definition
Subscapular fossa (ventral surface of scapula)
Term
Subscapularis insertion
Definition
Lesser tubercle of humerus
Term
Subscapularis action
Definition
Stabilizes shoulder joint; medially rotates and adducts humerus at the shoulder
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