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19 Cards in this Set
- Front
- Back
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What is Dalton's law? |
Partial pressures of gases when mixed |
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What is Boyle's law? |
Pressure and volume of a gas are related; P1V1=P2V2 |
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What is Henry's law? |
How gases dissolve in a liquid |
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How to calculate partial pressure? |
Total atmospheric pressure x percentage of certain gas= partial pressure |
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Mammalian lung structure |
Gas exchange occurs in the terminal bronchiole to alveoli |
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What is dead space? |
Anatomical- part of lung that is inactive that air must pass to get to the heart; doesn't change much Physiological- highly dynamic depending on activity |
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What does tidal volume measure? |
Breathing under normal conditions |
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What is inspiratory reserve? |
Reserve volume that can be inhaled |
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What is expiratory reserve? |
Reserve volume that can be exhaled |
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What is inspiratory capacity? |
Tidal volume and inspiratory reserve volume |
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What is vital capacity? |
As much volume that can be both inhaled and exhaled |
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What is total lung capacity? |
As much air the lungs can hold |
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How does gas transport occur? |
Oxygen binds to heme and dissolved in blood/plasma Carbon Dioxide binds to globin, can convert into bicarbonate and is dissolved in blood |
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What is the Bohr effect? |
Hemoglobin's oxygen binding affinity is inversely related both to acidity and to the concentration of carbon dioxide. |
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Dr. G's favorite equation |
CO2 + H2O <> H2CO3 <> H + HCO3 |
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What is the enzyme driving Dr. G's favorite equation? |
Carbonic anhydrase |
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How does the nervous system control the circulatory system? |
Reflex regulation of ventilation; conscious control > higher brain centers > limbic system or pons > CPG > somatic motor neurons which relays negative feedback to regulate CO2, pH and oxygen. |
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What is ventilation? |
Inflating and deflating of lungs |
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What is repiration? |
Lung blood interface (external), and blood tissue interface (internal); exchange of gases |
