Origin, Action, Insertion Flashcards
Masseter Origin
zygomatic arch
Masseter Insertion
angle and ramus of mandible
Masseter Action
elevates mandible
Sternocleidomastoid Origin
clavicle and manubrium
Sternocleidomastoid Insertion
mastoid process
Sternocleidomastoid action
flex and rotate head
rhomboid major origin
spinous processes of T2-T5
rhomboid major insertion
medial border of scapula
rhomboid major action
adduct/retract scapula
pectoralis major origin
sternal clavicle, sternum, true rib cartilage
pectoralis major insertion
intertubercular sulcus, greater tubercle of humerus
pectoralis major action
flexes, rotates, adducts humerus
deltoid origin
lateral clavicle, acromion process, scapular spine
deltoid insertion
deltoid tuberosity
deltoid action
abducts humerus
triceps brachii origin
lateral scapula, proximal humerus
triceps brachii insertion
olecranon process