Heart and Points

1. Which layer of the heart wall consists of cardiac muscle tissue? (Points : 1) Epicardium Pericardium Myocardium Endocardium Hypocardium

2. Which blood vessel shown in the figure carries oxygenated blood to the lower thoracic cavity and the abdominal cavity of the body? (Points : 1) A B E F H

3. Blood leaving the left ventricle passes through which of the following structures? (Points : 1) Right atrium Interventricular septum Bicuspid valve Aortic semilunar valve Pulmonary semilunar valve

4. The volume of blood ejected from the left ventricle into the aorta each minute is called the (Points : 1) cardiac output. cardiac input. stroke volume. heart rate. pulse pressure.

5. Which wave in an electrocardiogram represents repolarization of the ventricles? (Points : 1) R wave T wave S wave P wave Q wave

6. All of the following aid in venous return of blood to heart EXCEPT (Points : 1) the skeletal muscle pump. the respiratory pump. blood viscosity. venoconstriction venous valves.

7. Which type of blood vessel plays a key role in regulating blood flow into capillaries? (Points : 1) arteries arterioles venules veins aorta

8. Which labeled structure in the figure is a metarteriole? (Points : 1) A B D F E

9. What physiological process is depicted in this figure? (Points : 1) Venous blood blockage Skeletal muscle pump Respiratory pump Thoroughfare channels Anastomosis

10. What would the pulse pressure and mean arterial pressure be for an individual with a blood pressure of 120/80? (Points : 1) 40; 100 40; 93.3 40; 103.3 200; 100