Low Partial Pressure of Oxygen in the Atmosphere Has What

question 5

Multiple Choice

Low partial pressure of oxygen in the atmosphere has what effect on the oxygen diffusion into the blood from alveoli?

• A) The diffusion rate of oxygen into the blood is always constant and does not change due to a change in the number of available oxygen molecules in the alveolar air.
• B) The diffusion rate is increased because there are more oxygen molecules available in the alveolar air.
• C) The diffusion rate is decreased because there are more oxygen molecules available in the alveolar air.
• D) The diffusion rate is increased because there are fewer oxygen molecules available in the alveolar air.
• E) The diffusion rate is decreased because there are fewer oxygen molecules available in the alveolar air.

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