As altitude increases the total atmospheric pressure Choose... but the percentage of oxygen in the atmosphere Choose... . That means the Choose... of oxygen will decrease as altitude increases. At a high enough altitude the partial pressure of oxygen inhaled will be lower than the partial pressure in Choose... blood entering the lungs. increases stays the same partial pressure arterial decreases venous atmospheric pressure
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In comparison to the partial pressure of oxygen (PO2) in atmospheric air:______ A. The PO2 in the alveoli is the same due to diffusion. B. The PO2 in the alveoli is lower because some air stays in the lungs at the end of expiration. C. The PO2 of the arterial blood is higher. D. The partial pressure of CO2 in atmospheric air is higher. E. The PO2 of the venous blood is higher.
Marlyn J.
Increasing the alveolar ventilation rate will increase the partial pressure of oxygen in the alveoli. decrease the rate of oxygen diffusion from the alveoli to the blood. increase the partial pressure of carbon dioxide in the alveoli. decrease the rate of carbon dioxide diffusion from the blood to the alveoli. have no effect on either the partial pressure or diffusion rate of gases.
Adi S.
How can a decrease in the percent of oxygen in the air affect the movement of oxygen in the body? a. It would not affect the rate of diffusion into the blood because there would be no difference between the partial pressures of the air and blood. b. It would decrease the rate of diffusion into the blood because it increases the difference between the partial pressures of the air and blood. c. It would increase the rate of diffusion into the blood because it reduces the difference between the partial pressures of the air and blood. d. It would decrease the rate of diffusion into the blood because it reduces the difference between the partial pressures of the air and blood.
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