muscles 1 upper body

insertion, origin, action

sternocleidomastoid origin

manubrium of sternum

sternocleidomastoid insertion

mastoid process

sternocleidomastoid action

flexion of neck

pectoralis major origin

sternum

pectoralis major insertion

intertubercular groove of humerus

pectoralis major action

flexion of humerus

trapezius origin

occiptal process

trapezius insertion

spine of scapula

trapezius action

elevation of scapula

deltoid origin

spine of scapula

deltoid insertion

deltoid tuberosity of humerus

deltoid action

abduction of humerus

latissimus dorsi origin

aponeurosis of iliac crest

latissimus dorsi insertion

intertubercular groove of humerus

latissimus dorsi action

adduction of humerus

serratus anterior origin

outer anterior surface of upper 8 ribs

serratus anterior insertion

medial border of scapula

serratus anterior action

protraction of scapula

rhomboids origin

spinous process

rhomboids insertion

vertebral border of scapula

rhomboids action

retraction of scapula

teres major origin

inferior angle of scapula

teres major insertion

intertubercular groove of humerus

teres major action

adduction of humerus

supraspinatus origin

supraspinous fossa of scapula

supraspinatus insertion

greater tubercle of humerus

supraspinatus action

aids in abduction of humerus

infraspinatous origin

infraspinous fossa of scapula

infraspinatous insertion

greater tubercle of humerus

infraspinatous action

latral rotation of humerus

teres minor origin

lateral border of scapula

teres minor insertion

lesser tubercle of humerus

teres minor action

lateral rotation of humerus

subscapularis origin

subscapular fossa of scapula

subscapularis insertion

lesser tubercle of humerus

subscapularis action

medial rotation of humerus

biceps brachii origin

long head: supraglenoid tubercle of scapula

biceps brachii insertion

radial tuberosity

biceps brachii action

flexion of elbow

triceps brachii origin

long head: infraglenoid tubercle of scapula

triceps brachii insertion

olecranon process of ulna

triceps brachii action

extension of elbow

brachioradialis origin

upper, lateral supracondylar ridge of humerus

brachioradialis insertion

styloid process of radius

brachioradialis action

flexes elbow

pronator teres origin

medial epicondyle of humerus

pronator teres insertion

lateral shaft of radius

pronator teres action

pronation of forearm

agonist

the primary muscle responsible for initiating and performing a specific movement

antagonist

the muscle that opposes or relaxes to allow the movement created by another muscle, the agonist

synergist

a muscle that works together with other muscles to produce a specific movement

Assists the agonist in preforming an action