Chapter 13 - Cardiovascular System

1. The heart is located:

A. Mostly to the left of the midline of the sternum

B. Mostly to the right of the midline of the sternum

C. With the apex slightly below the clavicle

D. Both A and C above

A.

2. The chambers of the heart include:

A. Two upper larger chambers called the atria

B. Two lower smaller chambers called the ventricles

C. Two lower larger chambers called the ventricles

D. Both A and B above

C.

3. The upper chambers are:

A. Discharging chambers

B. Called ventricles

C. Receiving chambers

D. Both A and B above

C.

4. The innermost layer of the heart is called the:

A. Epicardium

B. Endocardium

C. Visceral Pericardium

D. Both A and C above

B.

5. The pericardium:

A. Is a sac surrounding the heart

B. Has an outer layer called the parietal pericardium

C. Has an inner layer called the epicardium

D. All of the above

D.

6. The heart valves are arranged with the:

A. Mitral and pulmonary semilunar valves on the right side of the heart

B. Bicuspid (mitral) and aortic semilunar valves on the right side of the heart

C. Tricuspid and pulmonary semiluner valves on the right side of the heart

D. Tricuspid and aortic semilunar valves on the left side of the heart

C.

7. The superior vena cava carries:

A. Oxygen-rich blood to the right atrium

B. Oxygen-poor blood to the left atrium

C. Oxygen-rich blood to the left atrium

D. Oxygen-poor blood to the right atrium

D.

8. When the left ventricle contracts, it pushes blood through a valve to the:

A. Aorta

B. Pulmonary artery

C. Pulmonary vein

D. Inferior vena cava

A.

9. The pulmonary vein returns oxygen-rich blood to the:

A. Right atrium

B. Right ventricle

C. Left atrium

D. Left ventricle

C.

10. The right side of the heart:

A. Deals with oxygen-poor blood

B. Deals with oxygen-rich blood

C. Is the pump for systemic circulation

D. Both B and C above

A.

11. The heart is supplied with blood by:

A. Diffusion through the heart wall

B. The right and left cardiac arteries

C. Arteries that branch directly from the pulmonary artery

D. Arteries that branch directly from the aorta

D.

12. The "pacemaker" for the heart is usually the:

A. Sinoatrial node

B. Purkinje fibers

C. Bundle of His

D. Atrioventricular bundle

A.

13. The correct sequence for the conducting system is:

A. Sinoatrial node, AV bundle, Purkinje fibers, bundle of His

B. Sinoatrial node, AV node, Bundle of His, Purkinje fibers

C. Sinoatrial node, bundle of His, AV bundle, Purkinje fibers

D. Sinoatrial node, Purkinje fibers, AV bundle, AV node

B.

14. The blood vessels that carry blood away from the heart are the:

A. Veins

B. venules

C. Arterioles

D. Capillaries

C.

15. The blood vessels that carry blood toward the heart are the:

A. Veins

B. Arteries

C. Arterioles

D. Capillaries

A.

16. One-way valves are found in which blood vessels?

A. Capillaries

B. Veins

C. Arteries

D. Arterioles

B.

17. Which of the following is not true of ventricles?

A. Are called discharging chambers

B. Pump blood into the arteries

C. Have thinner walls than atria

D. All of the above are true

C.

18. Which of the following is not true of arteries?

A. They carry blood away from the capillaries.

B. They carry blood away from the heart.

C. They have thicker walls that do veins.

D. Their innermost layer is composed of endothelium.

A.

19. Blood that has just passed through the mitral valve is in the:

A. Aorta

B. Right ventricle

C. Left ventricle

D. Pulmonary artery

C.

20. Blood that has just passed through the tricuspid valve is in the:

A. Aorta

B. Right ventricle

C. Left ventricle

D. Pulmonary artery

B.

21. Blood in the pulmonary artery:

A. Was ejected from the left ventricle

B. Is rich in oxygen

C. Has just passed through a semilunar valve

D. All of the above

C.

22. Blood in the aorta:

A. Was ejected from the left ventricle

B. Is rich in oxygen

C. Has just passed through a semilunar valve

D. All of the above

D.

23. Cordlike structures are:

A. Are attached to the semilunar valves

B. Are attached to the atrioventricular valves

C. Are attached to the walls of the atria

D. All of the above

B.

24. The point of the heart is called the apex of the heart.

True

25. The septum, which divided the upper chambers of the heart into right and left side, is called the interventricular septum.

False

26. One of the functions of the pericardium is to reduce the friction created by the beating heart.

True

27. In the contracting heart, atrial systole (contraction) is usually stronger than ventricular systole (contraction).

False

28. The Purkinje fibers and the bundle of His are involved in the contraction of the ventricles.

True

29. An EGG is a graphic representation of the heart's electrical activity.

True

30. Veins always carry blood back to the heart.

True

31. Veins always carry oxygen-poor blood.

False

32. In general, as blood volume in the arteries increases, the blood pressure increases.

True

33. An increase in heart rate always leads to an increase in blood pressure.

False