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Keith_Richards [23]
3 years ago
15

The heart is made of _____.

Social Studies
2 answers:
valina [46]3 years ago
5 0
The heart is made of muscle.

Hope this helps !

Photon
Whitepunk [10]3 years ago
5 0
The heart if made up of a couple of things 1.) is the cardiac muscle<span>, a muscle that contracts rhythmically of its on its own 2.) A tough </span>membranous bag, called thepericardium<span>, it surrounds the heart, and 3.) a </span>smooth<span>membrane, called the </span>endocardium<span>, lines the </span>inner surface<span>.

Hope this helps :)

</span>
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