Muscles & their actions
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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| Orbicularis Oculi | closes eye
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| masseter | elevates mandible
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| temporalis | elevates mandible
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| digastric | depresses mandible and elevates hyoid during swallowing
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| sternocleidomastoid | flexes neck and rotates head
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| omohyoid | depresses hyoid after swallowing
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| sternohyoid | depresses hyoid after swalling
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| external oblique | compresses abdomen, flexes and rotates trunk
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| internal oblique | compresses abdomen, flexes and rotates trunk
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| transversus abdominis | compresses abdomen
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| rectus abdominis | compresses abdomen, flexes trunk
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| diaphragm | flattens downward to expand thoracic cavity for inspiration
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| external intercostals | pull ribs out and up to expand thoracic cavity for inspiration
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| internal intercostals | draw ribs together and in to decrease thoracic cavity for expiration
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| pectoralis minor | depresses and moves scapula anteriorly
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| serratus anterior | rotates scapula to point glenoid cavity upward
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| trapezius | elevates clavicle and scapula, adducts scapula, or depress scapula
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| levator scapulae | elevates scapula
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| rhomboid major | adducts scapula
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| rhomboid minor | adducts scapula
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| pectoralis major | flexion and adduction at shoulder
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| latissimus dorsi | extension and adduction at shoulder
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| deltoid | abduction at shoulder
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| supraspinatus | abduction at shoulder
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| infraspinatus | lateral rotation at shoulder
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| teres minor | lateral rotation at shoulder
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| teres major | medial rotation at shoulder
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| subscapularis | medial rotation at shoulder
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| triceps brachii | extension at elbow
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| biceps brachii | flexion at elbow
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| brachialis | flexion at elbow
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| brachioradialis | flexion at elbow
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| pronator teres | pronates forearm
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| supinator | supinates forearm
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| flexor carpi radialis | flexion and abduction at wrist
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| palmaris longus | flexion at wrist
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| flexor carpi ulnaris | flexion and adduction at wrist
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| extensor carpi radialis longus | extension and abduction at wrist
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| extensor carpi radialis brevis | extension and abduction at wrist
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| extensor digitorum | extension at finger joints and wrist
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| extensor carpi ulnaris | extension and adduction at wrist
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| psoas major | flexion at hip
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| iliacus | flexion at hip
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| gluteus maximus | extension at hip
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| gluteus medius | abduction at hip
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| tensor fasciae latae | tenses iliotibial tract to support the knee joint
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| adductor longus | adduction at hip
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| adductor magnus | adduction at hip
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| gracilis | adduction at hip
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| sartorius | flexion and lateral rotation at hip, flexion at knee = ("crossing leg")
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| rectus femoris | flexion at hip, extension at knee
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| vastus lateralis | extension at knee
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| vastus medialus | extension at knee
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| vastus intermedius | extension at knee
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| biceps femoris | extension at hip, flexion at knee
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| semimebranosus | extension at hip, flexion at knee
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| semitendinosus | extension at hip, flexion at knee
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| gastrocnemius | plantar flexion at ankle
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| soleus | plantar flexion at ankle
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| tibialis anterior | dorsiflexion at ankle
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
fabarnick
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