What is the medical term for the tissue that makes up the thick middle layer of the heart?

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Multiple Choice

What is the medical term for the tissue that makes up the thick middle layer of the heart?

Explanation:
Think about the heart wall in three layers. The thick middle layer is the myocardium, made of cardiac muscle that contracts to pump blood. This muscular layer is thickest in the ventricles because they generate the force to propel blood through the body. The outer layer, epicardium, is a thin protective layer that blends into the pericardial membrane. The inner lining, endocardium, covers the chambers and valves to create a smooth surface. The pericardium is the surrounding sac, not a tissue of the heart wall.

Think about the heart wall in three layers. The thick middle layer is the myocardium, made of cardiac muscle that contracts to pump blood. This muscular layer is thickest in the ventricles because they generate the force to propel blood through the body. The outer layer, epicardium, is a thin protective layer that blends into the pericardial membrane. The inner lining, endocardium, covers the chambers and valves to create a smooth surface. The pericardium is the surrounding sac, not a tissue of the heart wall.

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