Asked by Karina Ibarra on Jul 13, 2024
Verified
Oxygen diffusion from the alveolus to the pulmonary capillary occurs because
A) alveolar PO2 is greater than capillary PO2.
B) oxygen diffuses faster than carbon dioxide.
C) alveolar PCO2 is greater than capillary PCO2.
D) alveolar PO2 is less than capillary PCO2.
E) carbon dioxide diffuses faster than oxygen.
Alveolus
A small air sac within the lungs where the exchange of oxygen and carbon dioxide takes place during respiration.
Pulmonary Capillary
A small, thin-walled blood vessel located in the lungs where gas exchange between the blood and alveoli occurs.
Oxygen Diffusion
The movement of oxygen molecules from areas of high concentration to areas of low concentration, essential for respiratory processes in cells.
- Describe the mechanisms of oxygen and carbon dioxide transport in blood.
Verified Answer
AM
adonas murrellJul 19, 2024
Final Answer :
A
Explanation :
Oxygen diffusion from the alveolus to the pulmonary capillary occurs because the partial pressure of oxygen (PO2) in the alveoli is greater than the PO2 in the capillaries, driving the diffusion of oxygen into the blood.
Learning Objectives
- Describe the mechanisms of oxygen and carbon dioxide transport in blood.