42. A healthy 35-year-old woman is breathing room air while standing. Which of the following best explains why alveoli at the top of the lungs have a higher Po, than alveoli at the of the lungs in this woman?
42. A healthy 35-year-old woman is breathing room air while standing. Which of the following best explains why alveoli at the top of the lungs have a higher Po, than alveoli at the of the lungs in this woman?
A) Higher perfusion per unit lung volume
B) Higher ratio of ventilation to perfusion
C) Higher ventilation per unit lung volume
D) Lower perfusion per unit lung volume
E) Lower ratio of ventilation to perfusion
F) Lower ventilation per unit lung volume
Breathing or respiration is the process of exchanging of gases Carbon dioxide exhale from the body and oxygen intake inspires in the body. Breathing is the process of inspiration and expiration. Alveoli are small organs present in the lungs. Alveoli are responsible for the exchange of gases. where the lungs and the blood exchange gases.
alveoli provide a large surface area for gas exchange. If the surface area is greater more gas exchange can occur. Po is the partial vapor pressure of Oxygen. when alveoli are at top of the lung have higher Po than the women standing in the room.
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