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4 votes
This layer of the heart wall consists mostly of the cardiac muscle and is the thickest and middle layer of the heart wall?

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User Lode
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2 Answers

4 votes

Answer: Myocardium

Explanation: I go to college for nursing and already took this class so I know

answered
User Thegeek
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8.2k points
5 votes

Myocardium

This layer surrounds and protects the heart.

answered
User Fred Lackey
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