Muscle 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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diaphragm | contraction causes flattening of diaphragm (moving inferiorly) during inspiration and thus expands thoracic cavity.
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transversus abdominis | unilateral action: laterally flexes vertebral column.
bilateral action: flexes vertebral column and compresses abdominal wall.
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rectus abdominis | flexes vertebral column and compresses abdominal wall
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external intercostalis | elevate ribs during quiet and forced inspiration
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internal intercostalis | depresses ribs during forced expiration
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external abdominal oblique | unilateral action: laterally flexes vertebral column; rotation of vertebral column.
bilateral action: flexes vertebral column and compresses abdominal wall
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internal abdominal obliqueunilateral | unilateral action: laterally flexes vertebral column; rotation of vertebral column.
bilateral action: flexes vertebral column and compresses abdominal wall.
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scalenes | flex the head, neck, and/or vertebral column
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erector spinae group (iliocostalis, logissimus, spinalis) | extend head, neck, and/or vertebral column
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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:
ahasenmu
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