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19 Cards in this Set
- Front
- Back
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Define Ventilation
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Movement of atmospheric air into alveoli
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Define Diffusion
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Movement of O2 across alveolar walls and into pulmonary capillaries
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Define Perfusion
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movement of O2 to and into cells
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Vessels of alveolar
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capillary membrane form a network around each alveolus so dense that an almost continuous sheet of blood covers the alveoli
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What is atelactasis?
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alveolar collapse
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Normal ventilation, normal perfusion
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Normal unit
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Normal ventilation, no perfusion
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Dead space unit
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No ventilation, normal perfusion
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Shunt unit
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No ventilation, no perfusion
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Silent unit
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Define Hypoxemia:
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Decreased oxygenation of arterial blood
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Define Hypoxia:
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Decreased oxygenation of the cell
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Dead space unit:
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ventilated alveoli receiving no blood flow
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Ischemia is...
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decreased blood flow to tissues
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Hypovolemic means:
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low blood volume
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What is dyspnea?
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shortness of breath
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what is cyanosis?
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Bluish color in the lips, tongue, mucous membranes.
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What is SAO2?
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Measures the percent of hemoglobin that is saturated with O2
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What does pO2 Measure?
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The amount of dissolved Oxygen in blood
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Hypoventilation is...
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Decreased rate and/or decreased depth of respiration.
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