Medical
Biology
Upper Respiratory Tract
Question
The partial pressure of oxygen in the alveoli of the lungs is
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Solution
Correct Option: B
Explanation:
- Diffusion of gases always takes place from higher concentration to lower concentration.
- So, for the movement of oxygen from alveoli to blood the partial pressure of oxygen is higher in blood than in the alveoli of the lungs.
- On the other hand, blood is rich in carbon dioxide.
