A)the major portion of the heart. B)made largely of cardiac muscle tissue. C)the endocardium. D)Both the major portion of the heart and made largely of cardiac muscle tissue.
Which of the following is NOT true about the heart?
A)It is located in the mediastinum. B)The base rests on the diaphragm. C)It connects the systemic and pulmonary circuits. D)It slants more to the left.