anatomy upper extremities

bicep brachii origin and action

long head-

origin- supraglenoid process

action- flexion at elbow and supination

short head-

origin- coracoid process

action- flexion at elbow and supination

triceps tracii insertions

lateral head- olecran process of ulna

long head- olecran process of ulna

medial head- olecran process of ulna

brachioradialis action

action - flexes elbow

ON THUMB SIDE OF FOREARM

pectoralis major actions

actions - extends shoulder from flexed position, adducts + medially rotates arm, flexes shoulder

think bench press

what makes the supraspinatus different from teres minor and infraspinatus

supraspinatus abducts the arm and holds humerus in place while teres minor and infraspinatus laterally rotate the arm.

pectoralis minor action/origin/insertion

action - depresses and potracts scapula, downward rotation of scapula, elevates ribs during forced inhalation

origin- ribs 3-5

insertion- coracoid process of scapula

whats the insertion of deltoid

deltoid tuberosity

pronator teres action

pronates forearm