actions of muscles
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| sternocleidomastoid | flexes and laterally rotates head
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| orbicularis oculi | closes eye
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| zygomaticus major | elevates corner of the mouth upward; smiling
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| zygomaticus minor | elevates corner of the mouth; smiling
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| orbicularis oris | closes lips; kissing muscle
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| masseter | closes jaw; matication
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| temporalis | closes jaw; mastication
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| buccinator | compresses cheek; blowing whistling,sucking
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| digastric (both bellies) | opens mouth and depresses mandible
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| erector spinae group | extends and laterally flexes vertebral column
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| quadratus lumborum | flexes vertebral column laterally
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| anterior scalene | elevates 1st tow ribs
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| middle scalene | elevates 1st two ribs
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| posterior scalene | elevates 1st two ribs
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| external intercostals | elevates rib cage; inhalation
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| internal intercostals | depresses ribs; exhalation
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| rectus abdominis | flexes and rotates lumbar region of vertbral column
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| trapezius | stabilizes, retracts, raises and rotates scapula
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| deltoid | abducts shoulder
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| supraspinatus | initiates abduction
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| infraspinatus | lateral rotation at shoulder
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| teres minor | lateral rotation at shoulder
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| subscapularis | medial rotation at shoulder
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| teres major | extends, medially rotates and adducts humerus
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| pectoralis major | medial rotation, flexion and adduction at shoulder
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| latissimus dorsi | medial rotation, extension and adduction at shoulder
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| triceps brachii | extension at elbow
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| biceps brachii | flexion at elbow and supination
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| brachioradialis | flexion at elbow
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| pronator teres | pronates wrist
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| flexor carpi radialis | flexes and abducts wrist
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| palmaris longus | flexes wrist (weak); tenses skin and fasciae of palm during hand movement
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| flexor carpi ulnaris | flexes and adducts wrist
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| extensor carpi ulnaris | extends and adducts wrist
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| extensor digitorum | extends digits
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| extensor carpi radialis brevis or longus | extends and abducts wrist
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| flexor digitorum supericialis | flexes wrist and middle phalanges of digits 2-5
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| supinator | assists biceps brachii to supinate forearm
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| biceps femoris | flexes knee and extension at hip
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| semitendinosus | flexes knee and extension at hip
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| semimembranosus | flexes knee and extension at hip
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| rectus femoris | extends knee and flexes thigh at hip
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| vastus lateralis | extends knee
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| vastus intermedius | extends knee
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| vastus medialis | extends knee
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| psoas major | flexes hip and flexes vertebral column laterally
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| iliacus | flexes hip
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| gluteus maximus | extends and laterally rotates hip
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| gluteus medius | abducts and medially rotates hip
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| tibialis anterior | dorsiflexes foot
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| gastrocnemius | plantarflexes (ankle extension)
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
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Created by:
alfinia
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