McGraw-Hill Online Learning Center Test<BLURT>

McGraw-Hill Online Learning Center Test

1. Review the animation and answer the following questions.

The main goal of breathing is to

A. remove excess oxygen from the body.
B. remove carbon dioxide from the body.
C. bring oxygen into the body.
D. bring oxygen into the body and remove carbon dioxide from it.

2. The respiratory membrane is A. the cell membrane of all the lung cells.
B. found at the junction between the alveoli and capillaries.
C. located at the bronchioles.
D. the site at which red blood cells cross between the circulatory and respiratory systems.

3. At the respiratory membrane, A. red blood cells in the capillary give up their oxygen and pick up carbon dioxide.
B. lung cells in the alveolus give up their oxygen to the red blood cells in the capillary.
C. carbon dioxide and oxygen pass freely in both directions.
D. red blood cells in the capillary give up carbon dioxide and pick up oxygen.

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