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The Muscular System (Body Movements (Plantar Flexion (bending foot…

- - - - Zygomaticus Minor
        
        raises upper lip
      - Masseter
        
        mastication
        
        raises mandible, chewing
      - Zygomaticus Major
        
        Smiling
        
        raises corner of mouth superiorly and laterally
      - temporalis
        
        temporal bone
        
        raises mandible and draws it posteriorly
      - platysma
        
        flat
        
        depresses lower lip, lowers mandible
      - sternocleidomastoid
        
        clavicle
        
        both neck felxion, single rotation of neck
      - orbicularis oculi
        
        circluar eye
        
        closes eye
      - orbicularis oris
        
        circular mouth
        
        closes and raises mouth
      - sternohyoid
        
        shoulder
        
        depresses hyoid
      - mentalis
        
        chin
        
        raises skin of chin
      - serratus posterior
        
        saw toothed
        
        pulls the lower ribs down and back
      - Occipitalis
        
        Temporal Head
        
        draws scalp posteriorly
      - diaphragm
        
        inspiration and expiration
      - Frontalis
        
        Frontal head
        
        raises eyebrows, draws scalp anteriorly
      - rectus abdominis
        
        parallel to midline
        
        flexes vertebral column, compresses abdomen
      - Buccinator
        
        Cheek
        
        Compresses cheek, blowing, sucking
      - external oblique abdominis
        
        diagnol to midline
        
        flexes, rotates vertebral column
      - internal oblique abdominis
        
        flexes, rotates vertebral column
    - - triceps brachii
        
        3 origins, humerus
        
        extends forearm at elbow
      - flexor carpi radialis
        
        wrist
        
        flexes and abducts hand at wrist
      - brachioradalis
        
        flexes forearm at elbow joint
      - flexor carpi ulnaris
        
        flexes and abducts hand at wrist
      - brachialis
        
        flexes forearm at elbow joint
      - extensor digitorum
      - biceps brachii
        
        2 origins, humerus
        
        flexes elbow, supinates forearm
      - serratus anterior
        
        boxer's muscle
        
        abducts , rotates scapula upward
      - pectoralis minor
        
        chest
        
        elevates scapula
      - Rhomoid Minor
        
        diamond shaped
        
        elevates scapula rotates downward
      - Trapezius
        
        trapezoid
        
        extended head, adduct scapula
    - - semimembranosus
        
        hamstrings
        
        flexes leg at knee at extends thigh
      - tibialis anterior
        
        anterior compartment
        
        dorsiflexes foot at ankle, inverts foot
      - semitendinosus
        
        hamstrings
        
        flexes leg at knee at extends thigh
      - extensor digitorum longus
        
        anterior compartment
        
        dorsiflexes foot at ankle, extends toes
      - biceps femoirs
        
        hamstrings
        
        flexes leg at knee at extends thigh
      - fibularis longus
        
        lateral compartment
        
        plantar flexes foot, everts foot
      - vastus medialis
        
        quadriceps
        
        extends leg at knee
      - gastronemius
        
        posterior compartment
        
        plantar flexes foot, inverts foot
      - vastus lateralis
        
        quadriceps
        
        extends legs at knee
      - rectus femoris
        
        quadriceps
        
        extends leg at knee, flexes thigh
      - sartorius
        
        longest muscle
        
        laterally rotates, flexes, and abducts thighs
      - Quadratus femoris
        
        4 sided
        
        laterally rotates and stablizies hip joints
      - gluteus medius
        
        medium sized
        
        abducts thight and medially rotates it
      - Gluteus maiximus
        
        largest
        
        extends thigh, rotates thigh laterally
      - Gracilis
        
        slender
        
        adducts and extends thigh