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3 Cards in this Set
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- Back
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what is inspiration
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the diaphragm and external intercoastal muscles contract, inceasing the size of the thoracic cavity. Intrapulmonary volume increases and gases within the lungs spread out. There is a decrease in intrapulmonary pressure and produces a partial vaccume. This pressure is less than atmospheric presure 760mmgh. Sucks air into lings, continues until pressure has equalized with atmospheric pressure.
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what is expiration
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muscles relax
intrapulmonary volume decreases, gases in lungs forced out. intrapulmonary pressure increases. |
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bbopp
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dd
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