Question

What is a circulatory system?

Answer 1

The circulatory system is made up of a circulatory fluid connective tissue called blood, a pumping organ called the heart, and the blood vessels called arteries, veins and capillaries. Blood is made up of plasma and formed elements of cells. It transports oxygen, nutrients, drugs, hormones to the tissues and carries away the waste of carbon dioxide, urea, uric acid etc. The heart is responsible for differentiating the oxygenated and the de-oxygenated blood and pumps it to the whole body. The blood vessels are distributed throughout the body. In the arteries, blood moves away from the blood t the tissues. It is generally oxygenated blood. In the veins, the blood moves towards the heart from the tissues. It is generally deoxygenated.