Question Detail

ZOO 101 Gas Exchange and Respiration in Mammals Objective Question
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Question

The inner surface of alveoli is lined with a thin layer of fluid. What is the purpose of this fluid?
Options
A To trap dust and bacteria
B To allow gases to dissolve before they diffuse
Correct Answer
C To warm the air
D To maintain the shape of the alveoli
Correct Answer

Option B is the correct answer.

Detailed Explanation

The moist surface of alveoli allows gases to dissolve in the fluid before they diffuse across the alveolar membrane, which is necessary for gas exchange.

Hint

Gases must be in solution to cross cell membranes.

Question Info

Course: ZOO 101
Topic: Gas Exchange and Respiration in Mammals
Type: Objective
Difficulty: Not specified
Question 766 of 2214
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