Explain Interacting System Functions Practice Test

The respiratory system exchanges gases in the lungs, and the circulatory system delivers oxygen to tissues and returns carbon dioxide to the lungs to be exhaled.

The circulatory system creates oxygen in the heart, and the respiratory system distributes it through blood vessels.

The respiratory system removes oxygen from the blood, and the circulatory system stores it in the lungs for later use.

The respiratory system and circulatory system do the same job, so either one alone can supply oxygen to tissues.