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72) The heart
Author
Series
Language
English
Description
Explains how the heart moves blood through the body, how exercise and a healthy diet keep the heart strong, and how to measure your heart rate.
Series
Language
English
Description
Part of a series that explains major systems of the human body, with an emphasis on how the body's systems enable people to perform everyday activities. Compares body systems to systems in the outside world to explain the mechanics and functions of the human body's complex systems. This segment looks at the many important roles played by muscle and skin.
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