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The circulatory system delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood on different sides. The types of blood vessels include arteries, capillaries and veins.
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white blood cells
The white blood cells or leukocytes help provide immunity by destroying or killing foreign pathogens and antigen and thereby provide protection from diseases and infections. They are therefore called the soldiers of our body.
4.The heart is at the center of your circulatory system, which is a network of blood vessels that delivers blood to every part of your body. Blood carries oxygen and other important nutrients that all body organs need to stay healthy and to work properly.
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