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56 Cards in this Set
- Front
- Back
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muscle fibers
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all muscle cells
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frontalis
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raises eyebrows
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Orbicularis Oculi
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blinks and closes eyes
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orbicularis oris
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closes and protrudes lips
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temporalis
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closes jaw
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zygomaticus
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raises corner of mouth
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masseter
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closes jaw
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buccinator
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compresses cheek as in whistling and sucking; holds food between teeth during chewing
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sternocleidomastoid
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flexes neck; rotates head
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platysma
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pulls corners of mouth inferiorly
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pectoralis major
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adducts and flexfes humerus
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external oblique
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flexes and rotates vertebral column
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biceps brachii
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flexes elbow and supinates forearm
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deltoid
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abducts arm
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iliopsoas
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flexes hip
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adductor muscles
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adduct thigh
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sartorius
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flexes thigh on hip
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quadriceps group
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vastus medialis, intermedius and lateralis. All extend knee; rectus femoris also flexes hip on thigh
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tibialis anterior
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dorsiflexes and inverts foot
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extensor, digitorum longus
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extends toes and dorsiflexes foot
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adductor muscles
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adduct thigh
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sartorius
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flexes thigh on hip
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fibularis muscles
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plantar flex and evert foot
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quadriceps group
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vastus medialis, intermedius and lateralis. All extend knee; rectus femoris also flexes hip on thigh
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trapezius
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extends neck and adducts scapula
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tibialis anterior
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dorsiflexes and inverts foot
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latissimus dorsi
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extends and adducts humerus
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extensor, digitorum longus
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extends toes and dorsiflexes foot
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erector spinae
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extends back
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fibularis muscles
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plantar flex and evert foot
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deltoid
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abducts humerus
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trapezius
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extends neck and adducts scapula
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latissimus dorsi
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extends and adducts humerus
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erector spinae
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extends back
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deltoid
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abducts humerus
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triceps brachii
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extends elbow
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flexor carpi radialis
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flexes wrist and abducts hand
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flexor carpi ulnaris
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flexes wrist and adducts hand
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flexor digitorum superficialis
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flexes wrists and fingers
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extensor carpi radialis
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extends wrists and abducts hand
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extensor digitorum
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extends fingers and wrist
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gluteus maximus
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extends hip when forceful extension is required
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gluteus medius
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abducts thigh
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hamstring muscles
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semitendinosus, semimembranosus, biceps femoris. flex knee and extend hip
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gastrocnemius
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plantar flexes foot and flexes knee
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soleus
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plantar flexes foot
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flexion
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generally in the sagittal plane that decreases the angle of the joint and brings two bones closer together
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extension
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opposite of flexion. increases the angle or distance between two bones or parts of the body. (straightening knee or elbow)
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rotation
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movement of a bone around its longitudinal axis
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abduction
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moving a limb away from the midline or median plane of the body
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adduction
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movement of a limb toward the body midline
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circumduction
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combination of flexion, extension, abduction, and adduction. poximal end of limb is stationary and distal end moves in a circle
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prime mover
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muscle that has the major responsibility for causing a particular movement
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antagonist
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muscles that oppose or reverse a movement
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synergists
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help prime movers by producing the same movement or by reducing undesirable movements
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fixators
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specialized synergists. hold a bone still or stabilize the origin of a prime mover so all the tension can be used to move the insertion bone
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