For each question, write T for true or F for false in the blank to the left of each number. If a state ment is false, correct it by replacing the underlined term and write the correct statement in the blank below the question. ___ 1. The aorta receives blood directly from the right atrium. ___ 2. Cardiac output equals heart rate multiplied by stroke volume. ___ 3. A heart rate of 150 beats/minute is described as tachycardia. ___ 4. Blood in the heart chambers comes into contact with the epicardium. ___ 5. The aorta is part of the pulmonary circuit. __ _ 6. Nerve impulses travel down the internodal pathways from the AV node ___ 7. A heart rhythm originating at the SA node is termed a sinus rhythm