Natural Science CLEP Prep Practice Exam

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Prepare for the CLEP Natural Science Exam with our comprehensive study materials and practice questions. Test your knowledge and ace the exam by mastering key concepts.

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What is the function of the heart?

To circulate oxygen-rich blood throughout the body
To pump nutrients throughout the body
To circulate oxygen-rich blood to the brain
To circulate ocean water throughout the body

The correct answer is: To circulate oxygen-rich blood throughout the body

The heart's main function is to circulate oxygen-rich blood throughout the body. This is necessary for the delivery of oxygen and nutrients to all cells, tissues, and organs in order to maintain their proper function. Option B is partially correct as the heart also pumps nutrients, but this is not its primary function. Option C is incorrect as the brain receives oxygen-rich blood from the heart, not the other way around. Finally, option D is incorrect as the heart does not circulate ocean water, it only circulates blood.