What does the circulatory systems do?
Functions of the Circulatory SystemThe circulatory system pumps blood, nutrients, oxygen, hormones, and waste products to and from cells.
- Transporting Oxygen and nutrients.
- Transporting waste products. The circulatory system transports waste products, such as carbon dioxide, urea, and lactic acid, away from cells and to the lungs, kidneys, and liver for excretion.
- Regulating Body temperature. The circulatory system helps to regulate body temperature by redistributing heat from warmer parts of the body to cooler parts.
- Protecting the body from Infection. The circulatory system contains white blood cells that help fight infection.
- Maintaining fluid and electrolyte Balance. The circulatory system helps to maintain fluid and electrolyte balance by regulating the movement of water and ions between cells and the bloodstream.
- Signaling. The circulatory system also transports hormones and other signaling molecules that help to coordinate the activities of different organs and systems.
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