THE HUMAN IMMUNE SYSTEM
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[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a 3D model of a human heart
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a picture of open heart surgery
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Detailed explanation-1: -The heart is a fist-sized organ that pumps blood throughout your body. It’s the primary organ of your circulatory system. Your heart contains four main sections (chambers) made of muscle and powered by electrical impulses. Your brain and nervous system direct your heart’s function.
Detailed explanation-2: -The heart’s primary function is to pump blood throughout the body. It supplies oxygen and nutrients to the tissues and removes carbon dioxide and waste from the blood. It also helps to maintain adequate blood pressure throughout the body.
Detailed explanation-3: -Structure of the Human Heart The right and the left region of the heart are separated by a wall of muscle called the septum. The right ventricle pumps the blood to the lungs for re-oxygenation through the pulmonary arteries. The right semilunar valves close and prevent the blood from flowing back into the heart.