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What is Understanding the Circulatory System about?

The circulatory system transports blood, nutrients, gases, and waste throughout the body. It has three main functions: transport, temperature regulation, and defense. The heart pumps blood through a closed loop system of arteries, veins, and capillaries. In humans, the heart has four chambers that keep oxygenated and deoxygenated blood separate. Blood carries oxygen, nutrients, hormones, and waste via plasma and formed elements like red blood cells.

Author

Tammy Lam

Language

EN