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9 Cards in this Set
- Front
- Back
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diaphragm
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pulls central tendon downward, increasing the vertical and anterolateral dimensions of the thorax
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external intercostals
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expansion of rib cage
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internal interchrondal intercostals m.
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expansion of rib cage
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serratus anterior m.
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Elevates 8-9 upper ribs
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serratus posterior superior m.
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elevates ribs 2-5
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sternoclidomastoid m.
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raises sternum & thus ribs
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trapezius m.
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elevates & depresses shoulders
maintains trunk stability |
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pectoralis major m.
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with arm fixed, pulls sternum and ribs upward during forced inspiration, may also facilitate forced expiration
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scalenus m. : anterior, medius, & posterior
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elevates 1st & second ribs.
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