Question

Which statement best describes the role of the lung in gas exchange?

A It produces oxygen as a waste product of cellular respiration
B It provides carbon dioxide to the capillaries.
C It extracts oxygen from the atmosphere for use by body cells.
D It takes in oxygen from the bloodstream.

Answer 1

Answer:

C It extracts oxygen from the atmosphere for use by body cells.

Explanation:

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Answer 2

The lungs extract oxygen from the atmosphere for body cells to use. This statement best describes the rule of the lungs. Thus, option C is correct.

What is lungs?

Lungs are found in pair and they are spongy, air, filled organs located on either side of the chest.

The wind pipe which is known as trachea contains inhaled air into the lungs through tubular branches known as bronchi.

Lungs are the important part of the respiratory system which helps in breathing. The main function of lungs it warm air to match the body temperature and moisturizer  it to the humidity level required by the body.

It delivers oxygen to the cells of the body and removes waste gases such as carbon dioxide from the body.

Therefore, the lungs extract oxygen from the atmosphere for body cells to use. This statement best describes the rule of the lungs. Thus, option C is correct.

Learn more about lungs here:

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