First slide

Exchange of Gases

Question

The partial pressure of oxygen in the atmosphere is

Easy

A

159 mm Hg
B

104 mm Hg
C

95 mm Hg
D

45 mm Hg

Solution

Partial pressure of oxygen in the atmosphere is 159 mm Hg.
Partial pressure of oxygen in the alveoli is 104 mm Hg.
Partial pressure of oxygen in oxygenated blood is 95 mm Hg.
Partial pressure of CO₂ in deoxygenated blood is 45 mm Hg.

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