SSC MCQ Question Ans. All about the Heart. The blood circulatory system is one of the most vital systems in human beings and other higher animals because this system supplies nutrition all over the body for metabolic activities. Blood circulatory system consists of blood, heart and blood vessels. The heart is formed by cardiac muscles. It is a triangular vacuum chambered and pump like the organ. Blood is circulated by its expansion and contraction. Blood vessels are of three kinds according to shape, structure and function i,e, – artery, vein, and capillary.
SSC MCQ Question Ans. All about the Heart
The heart works like a pump in humans and other animals for circulating blood through vessels. Oxygenated blood is circulated in the whole body through artery. Normally carbon dioxide rich blood returns to heart from different parts of the body through veins. The connecting site of artery and vein is the capillary system. We will discuss blood in detail in this chapter.
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