Question Detail

ZOO 101 Gas Exchange and Respiration in Mammals Objective Question
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Question

What is the partial pressure of oxygen (pO₂) in the capillary blood arriving at the alveolus?
Options
A 100 mm Hg
B 45 mm Hg
C 40 mm Hg
Correct Answer
D 0 mm Hg
Correct Answer

Option C is the correct answer.

Detailed Explanation

The pO₂ in the capillary blood is low, about 40 mm Hg, creating a concentration gradient that causes oxygen to diffuse from the alveolus into the blood.

Hint

This lower pressure pulls oxygen from the alveoli.

Question Info

Course: ZOO 101
Topic: Gas Exchange and Respiration in Mammals
Type: Objective
Difficulty: Not specified
Question 769 of 2214
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