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Muscle Actions A&P

Frontalis/Occipitalis Raise Eyebrow; Move Scalp
Orbicularis Oculi Close eye
Orbicularis Oris Close lip; Kissing muscle
Buccinator Compress cheek; Draw corners of mouth laterally
Zygomaticus (Major/Minor) Raise corner of mouth; smile
Masster Close jaw; elevate mandible
Temporalis close jaw; elevate mandible
Platysma depress mandible; pulls lower lip back and down
Sternocleidomastoid flex head; rotate head up to opposite side
trapezius adduct, elevates and depresses scapula; extends head
Rhomboids (Major/Minor) adduct scapula; rotates scapula inferiorly
Pectoralis Minor Protract and lower scapula; raise ribs in forced inspiration
Serratus Anterior Protract and rotates scapula
Pectoralis Major Prime mover arm flexion; adduct and medially rotate
Latissimus Dorsi Prime mover arm extention; adduct and medially rotate
Deltoid Prime mover arm abduction
Rectus Abdominis, External Oblique, Internal Oblique Compress abdomen; flex spine (3)
Transverse Abdominis Compress abdomen
Biceps Brachii, Brachialis, Brachioradialis Flex forearm (3)
Triceps Brachii Extend forearm
Pronator Teres Pronate forearm; hand
Supinator Supinate forearm; hand
Rectus femoris Extend knee; flex thigh
Vastus medialis, Vastus lateralis, Vastus intermedius Extend knee (3)
Bicep femoris, Semitendinosus, Semimembranosus Flex knee, extend thigh (3)
Tensor fasciae latae Abduct thigh
Adductor longus, Adductor brevis, Adductor magnus Adduct thigh (3)
Gracilis Adduct thigh
Psoas major, Ilicus Flex vertebral column; flex hip or thigh (2)
Gluteus maximus Extend thigh
Gastrocnemius, Soleus Plantar flexion (2)
Tibialis anterior Dorsiflexion; Inversion
Created by: kbrabant09



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