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8 Cards in this Set
- Front
- Back
V/Q ratio describes the ratio between:
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Ventilation and perfusion
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If you have more perfusion than ventilation, _______ will occur:
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Shunting
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If you have more ventilation than perfusion, ______ is the result
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Wasted ventilation
(dead space) |
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V/Q ratio by region of the lung:
Apices: Middle: Bases: |
V/Q Ratio:
A- 3.3 (low blood flow) M- 1.0 (moderate blood flow) B- 0.66 (high blood flow) |
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Since bloodflow changes considerably from top to bottom in the upright lung, the bases of the lungs
receive ____ x more blood than the ______: |
Bases receive 20 x more blood and the apices
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Ventilation is also increased in the lung bases, with approximately ____ x as much ventilation going to the bases than to the _____:
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4 x more to the base is than the apices
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Henry's law: a volume of a gas that will dissolve in a liquid is:
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= to its partial pressure of a gas x it's solubility coefficient
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Only ____ % of the oxygen in the blood is dissolved in:
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5% dissolved in
Blood and plasma |