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The heart pumps  oxygenated blood to the other body parts.

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The heart wall is made of 3 layers
Epicardium
Myocardium
Endocardium

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A heart beats about 100,000 times a day

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Heart has size of a fist...

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The human heart's size is of our fist's size

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the number of beats per minute is called pulse

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the number of beats per minute is called pulse

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Human heart pumps the blood and it has 4 chambers

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Our heart is about the size of a clenched fist, and weighs between 300 and 450 g.

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The heart has different chambers arteries carry oxygenated blood from heart to all the body parts and veins carry deoxygenated blood from body parts to heart.

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The Heart has 4 chambers to separate oxygenated and de-oxygenated blood.

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Each day, your heart pumps about 2,000 gallons of blood.
It can even beat outside our body.
Whales have the largest heart in mammals .
A lot of heart attacks occur on christmas day.

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Human heart is a necessary organ its average size is about our fist

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Human heart pumps the blood and it has 4 chambers while octopus have 13 chambers

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The pump of blood it supply the oxygen