PSK4U muscle list

Sternocleidomastoid

flexes neck; rotates head

Diaphragm

creates pressure difference for respiratio

Rectus Abddonminus

Flex trunk, expiration

external oblique

Flex/rotate vertebral column, forced expiration

pectoralis major

internal rotation, abduction and flexion of arm

latissimus dorsi

adduction, extension, internal rotation of arm

Supraspinatus (rotator cuff group)

abduction of shoulder, stabilize shoulder joint

infraspinatus (rotator cuff group)

lateral rotation of shoulder

teres minor

stabilization, lateral rotation of shoulder

subscapularis

medial rotation of humerus

trapezius

scapular elevation, adduction, rotation, depression

deltoid

anterior head: flexion + medial rotation of shoulder
posterior head: extension + lateral rotation of arm
lateral head: abduction of arm

biceps brachii

supination of forearm, flexion of elbow

triceps brachii

extension of arm, antagonist of biceps brachii

brachioradialis

flexion of elbow

gluteus maximus

hip extension + external rotation

gluteus medius

abduction + internal rotation of thigh

gluteus minimus

abduction + internal rotation of thigh

sartorius

flexion + outward rotation of hip, flexion of knee

adductor longus

hip adduction

adductor magnus

hip adduction + extension

adductor brevis

hip adduction + flexion

pectineus

hip flexion + adduction

rectus femoris (quadricep group)

knee extension, hip flexion

vastus lateralis

knee extension (1 of 3)

vastus intermedius

knee extension (2 of 3)

vastus medius

knee extension (3 of 3)

biceps femoris

hip extension, knee flexion, external rotation of flexed knee

semi-membranosus

flexion + internal rotation of knee, extension of hip

semi-tendinosus

flexion + internal rotation of knee, extends hip

gastrocnemius

plantarflexion of ankle, inversion of foot

soleus

plantarflexion of ankle

tibialis anterior

dorsiflexion of ankle, inversion of foot