SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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blood vessels
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lungs
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heart
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None of the above
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Detailed explanation-1: -Your heart walls are the muscles that contract (squeeze) and relax to send blood throughout your body. A layer of muscular tissue called the septum divides your heart walls into the left and right sides. Your heart walls have three layers: Endocardium: Inner layer.
Detailed explanation-2: -The heart is a very strong muscle that pumps blood throughout the body. Blood vessels are the tubes that carry blood throughout the body. Blood carries oxygen, nutrients, waste and water to and from body cells.
Detailed explanation-3: -Myocardium – a thick, muscular middle layer that contracts and relaxes to pump blood around of your heart.
Detailed explanation-4: -Your heart is roughly the size of a fist and sits in the middle of your chest, slightly to the left. It’s the muscle at the centre of your circulation system, pumping blood around your body as your heart beats.