BASIC FUNCTIONS OF THE CIRCULATORY SYSTEM

Four main functions of circulatory system. Pump. Blood transport system around body. Carries oxygen and nutrients to cells, carries away waste products. Lymph system – returns excess tissue fluid to general circulation. Heart. Ave. 72 beats per minute, 100,000 beats per day. Superior and inferior vena cava bring deoxygenated blood to right atrium ................
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