muscle action

Medial thigh muscles (adductor group) - actions

Adduction, flexion, extension, and lateral rotation of the thigh

Orbicularis oris - action

Compresses and protrudes lips

Latissimus dorsi - actions

Extension, adduction, and medial rotation of the arm

Brachialis - action

Flexion of forearm

Triceps brachii - action

Extension of forearm

Gluteus maximus - action

Extension of thigh

Pectoralis major - actions

Adduction, flexion, and medial rotation of the arm

Adductor magnus - action

Adduction of thigh

Temporalis - action

Elevates and retracts the mandible

Quadriceps femoris - action

Extension of the leg

Erector spinae - action

Extension of the vertebral column and head

Biceps brachii - actions

Flexion of forearm and supination of forearm

Brachioradialis - action

Flexion of forearm

Gastrocnemius - actions

Flexion of lower leg and plantar flexion of foot

Iliopsoas - action

Flexion of thigh

Rectus abdominis - action

Flexion of trunk