SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Protects organs and produces red blood cells.
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Generates heat.
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Breaks down food into nutrients.
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The heart is a pump, which moves the blood. The arteries and veins are the pipes where the blood flows.
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Detailed explanation-1: -Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide. These roadways travel in one direction only, to keep things going where they should.
Detailed explanation-2: -It’s the muscle at the centre of your circulation system, pumping blood around your body as your heart beats. This blood sends oxygen and nutrients to all parts of your body, and carries away unwanted carbon dioxide and waste products.
Detailed explanation-3: -Veins carry blood toward the heart. After blood passes through the capillaries, it enters the smallest veins, called venules. From the venules, it flows into progressively larger and larger veins until it reaches the heart.
Detailed explanation-4: -The heart’s role is to pump oxygen-rich blood to every cell in the body. The blood vessels-a network of interconnecting arteries, arterioles, capillaries, venules, and veins-provide the pathway in which blood travels.
Detailed explanation-5: -The heart is an organ which beats continuously to act as a pump for the transport of blood, which carries other substances with it. The heart pumps the deoxygenated blood to the lungs for oxygenation and receives oxygenated blood from lungs. It pumps the oxygenated blood to different parts of the body.