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science prezi for school

Madison A

on 17 March 2015

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Transcript of HEARTS

by: Madison, Ashton, Erin
the heart weighs between 7 and 15 ounces-about the weight of a juice box
Your heart is roughly the size of your fist
The heart pumps about 100 gallons of blood through the body each hour-enough to fill 1600 drinking glasses
By the end of a long life, a person's heart may have beat more than 3.5 billions times.
fun fact that we learned
the heart dose more physical work than any other muscle in the body
The heart is actually located in the middle of your chest between the two lungs, not on the left side of the chest
The "lub dub"sound of the heart beat is made by the four heart valves closing.
Electricity is what makes your heart pump. This system is called the conduction system.
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