BMS107 Past Test Questions
Chapter 22-23, Spring 2010
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  1. It is not a function of the fibrous pericardium to
    1. help anchor the heart in position
    2. prevent over-filling of the heart with blood
    3. reduce friction caused by heart movements

  2. Which of the following are superficial to the pericardial cavity?
    1. fibrous pericardium
    2. parietal layer of serous pericardium
    3. visceral layer of serous pericardium
    4. both A. and B.
    5. both B. and C.

  3. Which one of the following is attached to and may be considered part of the heart wall?
    1. fibrous pericardium
    2. parietal layer of serous pericardium
    3. visceral layer of serous pericardium
    4. none of the above

  4. In the myocardium, the muscle fibers are
    1. striated
    2. bifurcated
    3. joined by intercalated discs with gap junctions
    4. B. and C. only
    5. all of the above

  5. The blood that is within heart chambers is in direct contact with
    1. epicardium
    2. endocardium
    3. myocardium
    4. none of the above

  6. Which heart chamber is the first to receive oxygenated blood from the lungs?
    1. right atrium
    2. left atrium
    3. right ventricle
    4. left ventricle

  7. Which heart chamber pressurizes the blood that is in the systemic arteries?
    1. right atrium
    2. left atrium
    3. right ventricle
    4. left ventricle

  8. Which great vessel(s) is/are directly attached to the right atrium?
    1. aorta
    2. pulmonary trunk
    3. pulmonary veins
    4. superior vena cava and inferior vena cava

  9. The pulmonary trunk receives blood being ejected from the
    1. right atrium
    2. left atrium
    3. right ventricle
    4. left ventricle

  10. The _?_ contain(s) deoxygenated blood
    1. right heart
    2. systemic arteries
    3. pulmonary veins
    4. both A. and C.

  11. The left ventricle
    1. has a thicker wall than does the right ventricle
    2. generates more pressure during systole than does the right ventricle
    3. pumps more blood per minute that does the right ventricle
    4. both A. and B.
    5. all of the above

  12. During most of the time that a ventricle is in diastole,
    1. the myocardium is contracted
    2. the ventricle is generating pressure
    3. the volume of blood in the ventricle is constant
    4. the ventricle is filling with blood

  13. What is the sequence of phases of the cardiac cycle according to the textbook?
    1. atrial systole > ventricular systole > ventricular diastole
    2. atrial systole > ventricular diastole > ventricular systole
    3. ventricular systole > atrial systole > ventricular diastole
    4. ventricular diastole > ventricular systole > atrial systole

  14. Which valves, when closed, prevent backflow of blood into the ventricles?
    1. semilunar valves
    2. atrioventricular valves
    3. all heart valves, when closed, prevent backflow of blood into the ventricles
    4. none of the above (there are no valves that prevent backflow of blood into the ventricles)

  15. Which valves are closed when the pressure in the ventricles is high?
    1. semilunar valves
    2. atrioventricular valves
    3. semilunar valves and atrioventricular valves
    4. none of the above

  16. Contraction of papillary muscles and tension in the chordae tendineae tends to
    1. pull the cusps (flaps) of the semilunar valves inferiorly (toward the ventricles)
    2. pull the cusps (flaps) of the atrioventricular valves superiorly (toward the atria)
    3. pull the cusps (flaps) of the atrioventricular valves inferiorly (toward the ventricles)
    4. none of the above (the papillary muscles and chordae tendineae are not involved in valve function)

  17. Can the pressure in the aorta ever be greater than the pressure in the left ventricle?
    1. Yes, this normally happens during ventricular systole and it causes the aortic semilunar valve to open.
    2. Yes, this normally happens during ventricular diastole and it causes the aortic semilunar valve to open.
    3. Yes, this normally happens during ventricular diastole and it causes the aortic semilunar valve to close.
    4. No, pressure in the aorta can be greater than the pressure in the left ventricle only in cases of cardiomyopathy (failure of heart muscle).

  18. The natural cardiac "pacemaker" is
    1. called the atrioventricular node
    2. called the sinoatrial node
    3. located in the right atrium
    4. both A. and C.
    5. both B. and C.

  19. Electrical signals generated by the atrioventricular node eventually reach the
    1. atrial myocardium
    2. ventricular myocardium
    3. both of the above
    4. none of the above (the atrioventricular node does not generate electrical signals)

  20. True or false? The main function of the right bundle branch is to conduct action potentials from the sinoatrial node to the atrioventricular node.
    1. True.
    2. False.

  21. In order to reach the left ventricular myocardium, signals will normally pass through the
    1. atrioventricular bundle
    2. left bundle branch
    3. Purkinge fibers
    4. all of the above
    5. none of the above

  22. The heart receives
    1. sympathetic signals via the vagus nerves and parasympathetic signals via the cardiac nerves
    2. sympathetic signals via the cardiac nerves and parasympathetic signals via the vagus nerves
    3. all autonomic signals via the vagus nerves
    4. all autonomic signals via the cardiac nerves

  23. The coronary arteries are most directly connected to the _?_.
    1. aorta
    2. coronary sinus
    3. pulmonary trunk
    4. ductus arteriosus

  24. The coronary sinus
    1. receives deoxygenated blood from the cardiac veins
    2. carries deoxygenated blood to the left atrium
    3. carries deoxygenated blood to the superior vena cava
    4. both A. and B.
    5. both A. and C.

  25. A fetus receives oxygen through the
    1. ductus arteriosus
    2. umbilical arteries
    3. umbilical vein
    4. both A. and B.

  26. The foramen ovale normally exists in the _?_ and its function is to _?_.
    1. umbilical cord / shunt blood from umbilical artery to umbilical veins
    2. pulmonary trunk of a fetus / shunt blood to aorta
    3. interatrial septum of a fetus / shunt blood from right atrium to left atrium
    4. interventricular septum of a fetus / shunt blood from left ventricle to right ventricle

  27. In a fetus, some of the blood in the pulmonary trunk is immediately diverted to the
    1. aorta
    2. coronary sinus
    3. pulmonary veins
    4. superior vena cava

  28. One month following birth, the _?_ is normally "open" and allowing passage of blood.
    1. foramen ovale
    2. ductus arteriosus
    3. both of the above
    4. none of the above

  29. Of all blood vessels in the body, the _?_ are the most elastic.
    1. large arteries
    2. small arteries
    3. capillaries
    4. veins

  30. Which type of vessel is the most permeable?
    1. sinusoid
    2. fenestrated capillary
    3. continuous capillary
    4. none of the above (they all have the same degree of permeability)

  31. Which statement is true?
    1. The act of inspiration ("inhalation") tends to draw blood through veins toward the heart.
    2. The act of inspiration ("inhalation") tends to push blood through veins away from the heart.
    3. The acts of inspiration ("inhalation") and expiration ("exhalation") both tend to draw blood through veins toward the heart.
    4. Neither the act of inspiration nor the act of expiration affect the flow of blood through veins.

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