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22 Cards in this Set
- Front
- Back
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inspiration & expiration is dependent upon the relationship between ____ ____ & ____ ____
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volume change - pressure change
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Boyles's law (ideal gas law) states that the pressure of gas varies ____ with its _____, when temperature is constant
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inversely - volume
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inspiration is initiated by contraction of the ____ & the ____ intercostal muscles
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diaphragm - external
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inspiration __creases intrapulmonary pressure
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decreases
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during inspiration process, diaphragm contracts → ____ out (normally dome shape
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flattens
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during inspiration process, diaphragm contracts → thoracic cavity volume __creases
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increases
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during inspiration process, ribs are raised by the contraction of the ____ intercostals
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external
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during inspiration process, contraction of the ____ intercostals increases ____ cavity volume
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external - thoracic
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during inspiration process, the ____ stretch
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lungs
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during inspiration process, ____ volume also increases
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intrapulmonary
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during inspiration process, ____ pressure drops
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intrapulmonary
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during inspiration process, air rushes into the lungs because …
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atmospheric air pressure is higher than the pressure within the lungs
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expiration is a ____ process that depends on the ____ ____ of the lungs
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passive - elastic recoil
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expiration __creases intrapulmonary pressure & __creases volume in thoracic cavity
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increases - decreases
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air moving out causes a __crease in intrapulmonary pressure
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increase
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during expiration process, the ____ relaxes & assumes its normal ____-shape
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diaphragm - dome
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during expiration process, the ____ intercostals relax and the ____ ____ lowers
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external - rib cage
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during expiration process, thoracic cavity volume __creases
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decreases
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during expiration process, the lungs ____ back to a ____ size
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recoil - smaller
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during expiration process, intrapulmonary pressure __creases
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increases
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during expiration process, intrapulmonary volume __creases
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decreases
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during expiration process, ____ moves out of the lungs
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air
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