22 Study Guide

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NursyDaisy
ID:
137389
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22 Study Guide
Updated:
2012-04-30 13:58:33
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Pathophysiology
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Description:
Structure and Function of the Cardiovascular and Lymphatic Systems
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  1. Oxygenated blood flow through the:
    A. superior vena cava.
    B. pulmonary arteries.
    C. coronary veins.
    D. pulmonary veins.
    e. None of the above is correct.
    D. pulmonary veins.
    (this multiple choice question has been scrambled)
  2. The hepatic vein carries blood from the:
    A. vena cava to the liver.
    B. liver to the vena cava.
    C. aorta to the liver.
    D. liver to the aorta.
    B. liver to the vena cava.
    (this multiple choice question has been scrambled)
  3. The position of the heart in the mediastinum is:
    A. posterior to the lungs and anterior to the diaphragm.
    B. posterior to the trachea, anterior to the esophagus.
    C. inferior to the diaphragm and between the lungs.
    D. between the lungs, superior to the diaphragm.
    D. between the lungs, superior to the diaphragm.
    (this multiple choice question has been scrambled)
  4. The pericardial space is found between the:
    A. myocardium and parietal pericardium.
    B. endocardium and visceral pericardium.
    C. visceral and parietal pericardium.
    D. visceral and epicardial pericardium.
    C. visceral and parietal pericardium.
    (this multiple choice question has been scrambled)
  5. In the normal cardiac cycle, which of the following occurs? (More than one answer may be correct)
    a. The right atrium and right ventricles contract simultaneously.
    b. The two atria contract simultaneously, whereas the two ventricles relax.
    c. The two ventricles contract simultaneously, whereas the two atria relax.
    d. Both the ventricles and atria contract simultaneously to increase cardiac output.
    • b. The two atria contract simultaneously, whereas the two ventricles relax.
    • c. The two ventricles contract simultaneously, whereas the two atria relax.
  6. The QRS complex of the EKG represents:
    A. ventricular depolarization.
    B. ventricular repolarization.
    C. atrial depolarization.
    D. atrial repolarization.
    E. atrial contraction.
    A. ventricular depolarization.
    (this multiple choice question has been scrambled)
  7. A person having a heart rate of 100, a systolic blood pressure of 200, and a stroke volume of 40 ml would have an average cardiac output of:
    a. 0.5 ml/min.
    b. 51/min.
    c. 4 ml/min.
    d. 8000 ml/min.
    e. None of the above is correct.
    e. None of the above is correct.
  8. During atrial systole, the:
    A. semilunar valves are open.
    B. atria are filling.
    C. atrioventricular valves are open.
    D. ventricles are emptying.
    C. atrioventricular valves are open.
    (this multiple choice question has been scrambled)
  9. Which does not significantly affect heart rate?
    A. parasympathetic nerves
    B. sympathetic nerves
    C. atrioventricular valves
    D. acetylcholine
    C. atrioventricular valves
    (this multiple choice question has been scrambled)
  10. One cardiac cycle:
    A. has a duration that changes if the heart rate changes.
    B. Both a and b are correct.
    C. pumps approximately 5 liters of blood.
    D. usually requires less than 1 second to complete.
    E. is equal to the stroke volume times heart rate.
    B. Both a and b are correct. (a. has a duration that changes if the heart rate changes. b. usually requires less than 1 second to complete.)
    (this multiple choice question has been scrambled)
  11. Compared with arteries, veins:
    A. Both a and b are correct.
    B. recoil quickly after distension.
    C. have a larger diameter.
    D. are thick-coated.
    C. have a larger diameter
    (this multiple choice question has been scrambled)
  12. Normal systolic pressure within the left ventricle is in the range of:
    A. 90 to 140 mm Hg.
    B. 0 to 10 mm Hg.
    C. 15 to 30 mm Hg.
    d. None of the above is correct.
    A. 90 to 140 mm Hg.
    (this multiple choice question has been scrambled)
  13. Backflow of blood from the arteries into the relaxing ventricles is prevented by the:
    A. atrioventricular valves.
    B. venous valves.
    C. pericardial fluid.
    D. semilunar valves.
    D. semilunar valves.
    (this multiple choice question has been scrambled)
  14. Adrenomedullin (ADM):
    A. mediates sodium reabsorption.
    B. exhibits powerful vasodilatory activity.
    C. exhibits powerful vasoconstriction activity.
    D. is present only in cardiovascular tissue.
    B. exhibits powerful vasodilatory activity.
    (this multiple choice question has been scrambled)
  15. The Frank-Starling law of the heart concerns the relationship between:
    A. the length of the cardiac muscle fiber and the strength of contraction.
    B. systolic rate and cardiac output.
    C. the rapidity of nerve conduction and stroke volume.
    D. stroke volume and arterial resistance.
    A. the length of the cardiac muscle fiber and the strength of contraction.
    (this multiple choice question has been scrambled)
  16. How does cardiac muscle differ from skeletal muscle? It is (more than one answer may be correct):
    a. arranged in parallel units.
    b. arranged in branching networks.
    c. multinucleated.
    d. single-nucleated.
    e. more accessible to sodium and potassium ions.
    • b. arranged in branching networks.
    • d. single-nucleated.
    • e. more accessible to sodium and potassium ions.
  17. Blood pressure is measured by the:
    A. pressure exerted by the blood on the wall of any blood vessel.
    B. pressure exerted on arteries by the blood.
    C. pressure exerted by the blood on the wall of any blood vessel.
    D. product of the stroke volume times heart rate.
    B. pressure exerted on arteries by the blood.
    (this multiple choice question has been scrambled)
  18. Identify the correct sequence of the portions of the pulmonary circulation.
    1. pulmonary veins
    2. pulmonary arteries
    3. lungs
    4. right ventricle
    5. left atrium

    A. 5, 2, 3, 1, 4
    B. 1, 5, 3, 2, 4
    C. 5, 1, 3, 2, 4
    D. 4, 2, 3, 1, 5
    E. 4, 1, 3, 2, 5
    D. 4, 2, 3, 1, 5
    (this multiple choice question has been scrambled)
  19. The normal heartbeat is initiated by the:
    A. right ventricle.
    B. AV node.
    C. SA node.
    D. atrioventricular bundle.
    E. coronary sinus.
    C. SA node.
    (this multiple choice question has been scrambled)
  20. If the sympathetic nervous system stimulation of the heart predominates over parasympathetic nervous system stimulation, the heart will:
    A. increase its rate.
    B. contract with greater force and at a slower rate.
    C. decrease its rate and force of contraction.
    D. contract with less force and at a higher rate.
    A. increase its rate.
    (this multiple choice question has been scrambled)
  21. When blood exhibits a turbulent flow:
    A. it is a sign of greater blood viscosity.
    B. resistance increases.
    C. there is greater hydrostatic pressure than if the fluids had laminar flow.
    D. the fluids have greater velocity than with laminar flow.
    B. resistance increases.
    (this multiple choice question has been scrambled)
  22. Identify the normal sequence of an electrical impulse through the heart's conduction system.
    1. atrioventricular bundle
    2. AV node
    3. Purkinje fibers
    4. SA node
    5. right and left bundle branches
    A. 4, 1, 2, 5, 3
    B. 2, 4, 1, 5, 3
    C. 4, 2, 1, 5, 3
    D. 4, 2, 5, 1, 3
    C. 4, 2, 1, 5, 3
    (this multiple choice question has been scrambled)
  23. Which factor might increase resistance to the flow of blood through the blood vessels?
    A. decreased numbers of capillaries
    B. decreased numbers of red blood cells
    C. an increased inner radius of diameter of blood vessels
    D. decreased blood viscosity
    A. decreased numbers of capillaries
    (this multiple choice question has been scrambled)
  24. Depolarization of cardiac muscle cells occurs because of:
    A. the cell's interior becoming more negatively charged.
    B. the cell's interior becoming less negatively charged.
    C. impermeability of the cell membrane to sodium.
    D. impermeability of the cell membrane to potassium.
    B. the cell's interior becoming less negatively charged.
    (this multiple choice question has been scrambled)
  25. Which statement is true?
    A. Lymph from the entire body, except for the upper right quadrant, eventually drains into the thoracic duct.
    B. The lymphatic system, like the circulatory system, is a closed circuit.
    C. The thoracic duct has approximately the same diameter as the great veins.
    D. Lymph contains more proteins than does blood plasma.
    E. Lymphatic walls consist of multiple layers of flattened endothelial cells.
    A. Lymph from the entire body, except for the upper right quadrant, eventually drains into the thoracic duct.
    (this multiple choice question has been scrambled)

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