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18 Cards in this Set
- Front
- Back
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What cells secrete mucus?
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Goblet cells
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Which lung is more likely to accept a foreign body?
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Right
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Type 1 alveolar cells secrete what?
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ACE
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Type 2 alveolar cells secrete what?
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surfactant
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What structures allow air to travel between sacs?
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Pores of Kohn
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What stimulates production of surfactant?
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Deep breathing, sighing
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What is atmospheric pressure?
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Pressure exerted by the air surrounding the body
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What is intrapulmonary pressure?
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Pressure within the alveoli
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What is intrapleural pressure?
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Pressure within the pleural cavity
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What is Dalton's Law of Partial Pressures?
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partial pressure of a gas in solution is directly proportional to its percentage in the mixture
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What is Henry's Law?
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when gases come into contact with liquid, they will dissolve into the liquid based on their partial pressure
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What element makes up the majority of the external atmosphere?
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Nitrogen (78%)
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What is the partial pressure of oxygen in the blood in the pulmonary arteries?
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40 mmHg
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What is the PO2 in the alveoli?
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104 mmHg
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What is the PCO2 of blood in the pulmonary arteries?
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45 mmHg
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What is the PCO2 of blood in the alveoli?
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40 mmHg
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What 3 things does saturation of hemoglobin depend on?
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Partial pressure of O2 and CO2
temperature blood pH |
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70% of CO2 is transported as what?
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plasma bicarbonate
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