| Question |
Answer |
| Henry's Law |
the mass of a gas that dissolves in a fluid at a given temp varies in direct proportion to the pressure of the gas over the liquid |
| 2 factors that affect the rate of gas diffusion into a fluid: |
1) the pressure differential between the gas above the fluid and the gas dissolved in the fluid2)the solubility of the gas |
| 2 factors that impair gas transfer capacity at the pulmonary-capillary membrane in pulmonary disease: |
1) buildup of a pollutant layer that thickens the alveolar membrane2) reduction in alveolar surface area |
| 2 ways that blood carries oxygen: |
1) in physical dilution dissolved in the fluid portion of blood2) loose combo with hemoglobin |
| cooperative binding |
union of oxygen with hemoglobin |
| oxyhemoglobin dissociation curve |
illustrates the saturation of hemoglobin with oxygen at various PO2 values |
| volume percent |
blood's oxygen content |
| oxygen transport cascade |
illustration that shows the oxygen partial pressure as oxygen moves from ambient air at sea level to the mitochondria of maximally active muscle tissue (pg. 284) |
| arteriovenous oxygen difference |
difference in the oxygen content of arterial blood and mixed venous blood |
| Bohr effect |
shifts in the dissociation curves of oxyhemoglobin due to any increase in plasma acidity and temp (curve shifts down and to the right...pg. 286) |
| 3 ways that blood carries carbon dioxide: |
1) in physical solution in plasma (small amount)2) combined with hemoglobin in red blood cells3) as plasma bicarbonate |
| carbonic anhydrase |
a zinc-containing enzyme in the red blood cell that accelerates the union of CO2 and water (pg. 291) |
| chloride shift |
increases the Cl content of erythrocytes in venous blood more than in arterial red blood cells |
| carbamino compounds |
form when carbon dioxide reacts with amino acids in blood proteins |
| Haldane effect |
interaction between oxygen loading and carbon dioxide release that facilitates carbon dioxide removal in lung (pg. 292) |
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