Nationally Registered Certified Medical Assistant (NRCMA) (NAHP) 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What are the muscle walls of the heart called?

Pericardium

Myocardium

The muscle walls of the heart are called the myocardium. The other options are incorrect because

A: The pericardium is the outer layer of tissue that surrounds the heart, not the muscle walls.

C: The endocardium is the inner layer of tissue that lines the chambers of the heart, not the muscle walls.

D: The epicardium is the layer of tissue that covers the surface of the heart, not the muscle walls.

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Endocardium

Epicardium

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