Question

What is the partial pressure of oxygen in the alveoli of lungs?

Answer 1

Partial pressure:

1. Alveoli are tiny air sacs in the shape of a balloon.
2. During the act of breathing in and out, the alveoli are where the lungs and blood exchange oxygen and carbon dioxide.
3. The pressure exerted by oxygen in a mixture in the alveoli of lungs is known as the partial pressure of oxygen.
4. It is represented by pO_2. Alveoli have a pO₂ of 104 mm Hg.