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Question

The middle layer of the heart wall is:


  1. Endocardium

  2. Epicardium

  3. Pericardium

  4. Myocardium


Solution

The correct option is D

Myocardium


The myocardium is the thick muscular middle layer of the wall of the heart. It is composed of spontaneously contracting cardiac muscle fibres which allow the heart to contract.

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