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What are the 12 systems in the human body?

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Functions: Heart Pumps blood through blood vessels; blood carries oxygen and nutrients to cells and carbon dioxide and waste away from cells and helps regulate acid-base balance, temperature and water content of body fluids; blood components help defend against disease and repair damaged blood vessels. read more

There are 10 systems of the human body. The Circulatory or Cardiovascular System includes the heart, the blood, and the blood vessels. The Dermal or Integumentary System includes the skin, hair, and nails. read more

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