Muscles from the Pectoral Girdle to the Humerus Flashcards
Teres major origin?
Inferior angle of scapula
Teres major insertion?
Crest of lesser tubercle of humerus
Teres major action?
Extends, adducts, medially rotates shoulder
Deltoid origin?
Acromial end of clavicle, acromion and spine of scapula
Deltoid insertion?
Deltoid tuberosity of humerus
Deltoid action?
Anterior: Flexes shoulder jt.
Lateral: Abducts shoulder jt.
Posterior: Extends shoulder jt.
Deltoid innervation?
Axillary n.
Subscapularis origin?
Subscapular fossa
Subscapularis insertion?
Lesser tubercle of humerus
Subscapularis action?
Medially rotates shoulder
Supraspinatus origin?
Supraspinous fossa
Supraspinatus insertion?
Greater tubercle of humerus
Supraspinatus action?
Abducts shoulder
Infraspinatus origin?
Infraspinous fossa
Infraspinatus insertion?
Greater tubercle of humerus
Infraspinatus action?
Laterally rotates shoulder
Teres minor origin?
Lateral border of scapula
Teres minor insertion?
Greater tubercle of humerus
Teres minor action?
Laterally rotates shoulder
Teres minor innervation?
Axillary n.