Answer:
Explanation:All cells in the body need to have oxygen and nutrients, and they need their wastes removed. These are the main roles of the circulatory system. The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.
Blood
Blood consists of:
Red blood cells – to carry oxygen
White blood cells – that make up part of the immune system
Platelets – needed for clotting
Plasma – blood cells, nutrients and wastes float in this liquid.
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