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The heart is made of _______________ muscle which means “______________________ or “______________________________________________”
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The heart is made of _______________ muscle which means “______________________ or “______________________________________________”

User Maximillian
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Answer:

The heart is made up of heart muscle known as Cardiac muscle, or myocardium This contracts almost 70 times a minute and pumps about 5 liters of blood each minute.

Step-by-step explanation:

User Greenstone Walker
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