The main function of the circulatory system is transporting blood, oxygen, hormones, nutrients and other important substances throughout the body. The circulatory system is actually two separate systems of circulation, p... More »

All vertebrates, segmented worms, such as earthworms, and cephalopods, such as squid, have closed circulatory systems. Closed circulatory systems allow larger animals to be much more active than those with open circulato... More »

To keep the circulatory system healthy, it is important to exercise on a regular basis, eat a healthy diet and avoid smoking. It helps to keep the body active by doing exercises, such as walking, jogging, running, biking... More »

Blood transports nutrients, oxygen, waste materials, hormones, proteins that need to be redistributed in the body and clotting factors. Oxygen bound to hemoglobin is transported via red blood cells. After the oxygen has ... More »

Blood is responsible for transporting oxygen, carbon dioxide, nutrients, hormones and proteins in the body, according to KidsHealth. The blood also carries glucose, ions, amino acids and waste products, such as urea, thr... More »

Blood, a liquid made up of plasma and cells, has several functions including controlling body temperature, supplying oxygen and nutrients, removing waste, assisting the immune system and transporting hormones. Blood cell... More »

The circulatory system allows blood to circulate throughout the body and transport nutrients, oxygen, hormones, carbon dioxide and blood cells to every part of the body in order to nourish it and help the body fight dise... More »

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