Exercise science exam 2

sternocleidomastoid

neck flexion and rotation

rectus abdominus

trunk flexion

atagonist-erector spinae

external obliques

anterior and lateral flexion, trunk rotation

erector spinae

extends the trunk

antagonist: rectus abdominus

pectoralis major

flexes shoulder

horizontal adduction

latissimus dorsi

extends and adducts shoulder

trapezius

elevates, retracts, and depresses the scapula

deltoids

shoulder flexion, abduction, extension

biceps brachii

flexes elbow, forearm supination

triceps brachii

chief extensor of elbow

brachioradialis

flexes elbow, forearm at rest

gluteus maximus

extends the hip, abducts the hip

iliopsoas

flexes hip and trunk

quadriceps femoris

extends knee, flexes hip

hamstrings

flexes knee, extends hip

gastrocnemius

plantar flexes the ankle, helps with knee flexion

tibialis anterior

major dorsiflexor of ankle