Questions and Answers
Which of the following best describes the function of the circulatory system?
Transporting blood and other materials
What is the purpose of the organization of blood vessels in the circulatory system?
To prevent mixing of oxygen-poor and oxygen-rich blood
What does the circulatory system extract from the cells?
Wastes
Which of the following best describes the function of the respiratory system?
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Where in the body does gas exchange occur?
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What happens to the heart and breathing rate during exercise?
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Why do the respiratory and circulatory systems work closely together?
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