Nationally Registered Certified Medical Assistant (NRCMA) (NAHP) Practice Exam

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Study for the Nationally Registered Certified Medical Assistant Exam. Prepare with interactive quizzes and multiple-choice questions that come with helpful hints and explanations. Get ready to earn your certification with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What are the muscle walls of the heart called?

  1. Pericardium

  2. Myocardium

  3. Endocardium

  4. Epicardium

The correct answer is: 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.