Articles > Myocardium definition – quiz Myocardium definition – quiz Quiz Choose the best answer. 1. What is the myocardium? the middle muscular layer of the heart the outer muscular layer of the heart the inner muscular layer of the heart 2. Which type of muscle is found in the myocardium? smooth muscle striated muscle cardiac muscle 3. Responsible for the pumping action of the heart epicardium myocardium endocardium 4. A special junctional complex between two cardiocytes syncytium intercalated disc Purkinje fiber 5. Refers to the chronic disease of the heart muscle Myocardial ischemia Myocardial infarction Cardiomyopathy Send Your Results (Optional) Your Name To Email Time is Up!