Physiology Review Questions 6

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Physiology Quizzes & Trivia

  
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  • 1. 
    Which of the following is incorrect?
    • A. 

      Arteries carry blood under higher pressure than blood found in veins or capillaries.

    • B. 

      Veins carry blood to the body tissues

    • C. 

      Exchange of water and solutes between the blood and the cells occurs in the capillaries

    • D. 

      Veins store excess blood

    • E. 

      All of the above


  • 2. 
    Which of the following blood vessles transports oxygenated blood from the lungs to the heart?
    • A. 

      Pulmonary artery

    • B. 

      Aorta

    • C. 

      Cartotid artery

    • D. 

      Pulmonary vein

    • E. 

      Iliac vein


  • 3. 
    Blood puming from the right ventricleis ________and enters the________.
    • A. 

      Oxygenated, pulmonary vein

    • B. 

      Deoxygenated, aorta

    • C. 

      Oxygentaed, pulmonary trunk

    • D. 

      Deoxygenated, coronary vein

    • E. 

      Deoxygenated, pulmonary trunk


  • 4. 
    Heart sounds results from:
    • A. 

      The expansion and elastic recoil of arteries

    • B. 

      Closing of heart valves

    • C. 

      Contraction of the ventricles

    • D. 

      The flow of the blood through the arteries

    • E. 

      The flow of the blood as it enters the heart


  • 5. 
    Given the following componenets of teh cariac conduction cycle, which of the following best describes the movement of the stimulus that causes a heart contraction; A. atrioventricular bundle, B. sinotrial nod, C.atria D. artrioventricular node E. Purkinje fibers F. ventricles 
    • A. 

      BCDAEF

    • B. 

      BDACEF

    • C. 

      DAEFBC

    • D. 

      ADEBCF

    • E. 

      BCDFAE


  • 6. 
    An electrocardiogram is used to
    • A. 

      Measure the amount of blood leaving the heart with each contraction

    • B. 

      Measure the electrical activity of the heart

    • C. 

      Listen to heart sounds

    • D. 

      Correct heart mumur

    • E. 

      Initiate agina pectoris


  • 7. 
    A patient was diagnosed with hypertension. This condition could result in all of teh following except:
    • A. 

      Heart failure

    • B. 

      Hardened scarred arteries

    • C. 

      Kidney damage

    • D. 

      Low blood pressure

    • E. 

      Greater resistance to blood flow in the blood vessles


  • 8. 
    Which of the following is true regarded baroreceptors?
    • A. 

      Regulates blood pressure

    • B. 

      Are located in the right atrium

    • C. 

      Respond to high blood pressure by causing an increase in the heart contraction

    • D. 

      Respond to low blood pressure by causing vasodilation of the arterioles

    • E. 

      Send nerve impulses directly to heart


  • 9. 
    Which of the following would result in a decrease in cardiac output?
    • A. 

      Increased heart rate

    • B. 

      Decreased stroke volume

    • C. 

      Exercise

    • D. 

      Strong emotions

    • E. 

      Activation of the sympathetic nerous system


  • 10. 
    All arteries in the body contain oxygen rich blood except:
    • A. 

      The aorta

    • B. 

      The pulmonary artery

    • C. 

      The renal artery

    • D. 

      The coronary artery


  • 11. 
    The lub or the first heart sound is produced by closing of
    • A. 

      The aortic semilunar valve

    • B. 

      The pulmonary semilunar valve

    • C. 

      The tricuspid valve

    • D. 

      The bicuspid valve

    • E. 

      Both AV valves


  • 12. 
    The QRS wave of an ECG is produced by
    • A. 

      Depolarization of the atria

    • B. 

      Repolarization of the atria

    • C. 

      Depolarization of the ventricles

    • D. 

      Repolarization of the ventricles


  • 13. 
    The cell that normally have the fastest rate of spontaneous depolarization are located in the:
    • A. 

      SA Nodes

    • B. 

      Av node

    • C. 

      The bundle of His

    • D. 

      The Purkinje fibers


  • 14. 
    The production and conduction of action potentials in the heart produce a recordable tracing of the electrical activity of the heart called
    • A. 

      EMG

    • B. 

      Depolarization

    • C. 

      Heart scan

    • D. 

      EKG


  • 15. 
    During the phase of isovolumetric relaxation of the ventricles, the pressure in the ventricles is
    • A. 

      Rising

    • B. 

      Falling

    • C. 

      First rising then falling

    • D. 

      Constant


  • 16. 
    According to the Frank Starling law the strength of ventriular contraction is
    • A. 

      Directly proportional to the end diastolic volume

    • B. 

      Inversely proportional to the end diastolic volume

    • C. 

      Independent of the end diastolic volume

    • D. 

      Related to the stimulation of the sympathetic nerves


  • 17. 
    In the absence of compensations the stroke volume will increase when:
    • A. 

      Blood volume increases

    • B. 

      Venous return increases

    • C. 

      Contractility increases

    • D. 

      Arterial blood pressure increases


  • 18. 
    The pulse pressure is a measure
    • A. 

      The number of heartbeats per minute

    • B. 

      The sum of the diastolic and systolic pressure

    • C. 

      The difference between the sustolic and distolic pressure

    • D. 

      The difference between the arterial and venous pressure


  • 19. 
    The first heart sound is produced at
    • A. 

      The beginning of systole

    • B. 

      The end of systole

    • C. 

      The beginning of diastole

    • D. 

      The end of disastole


  • 20. 
    The volume of blood pumped per minte by the left ventricle is
    • A. 

      Greater than the volume pumped by the right ventricle

    • B. 

      Less than the volume pumped by the right ventricle

    • C. 

      The same as the volume pumped by the right ventricle

    • D. 

      Either less of greater than the volume pumped by the right ventricle


  • 21. 
    During isovolumertic ventricular relaxation
    • A. 

      The left ventricular pressure exceeds aortic pressure

    • B. 

      Atrial pressure is less than ventricular pressure

    • C. 

      Ventricular pressure is increasing

    • D. 

      The atrioventricular valves are open


  • 22. 
    Ventricular depolarization
    • A. 

      Occurs prior to atrial depolarization

    • B. 

      Appears as the T wave on a ECG

    • C. 

      The same as the volume pumped by the right ventricle

    • D. 

      Occurs right after atrial depolarization


  • 23. 
    Cardiac output would be increased by
    • A. 

      Sympathetic antagonists

    • B. 

      Parasympathetic agonists

    • C. 

      Negative inotropic agents

    • D. 

      Positive chronotropic agents


  • 24. 
    The ejection fraction is
    • A. 

      Normally above 60% at rest

    • B. 

      The ratio of end diastolic volume to end of systolic volume

    • C. 

      Increased by parasympathetic agonists

    • D. 

      Increased by parasympathetic agonist

    • E. 

      Decreased by sympathetic agonists


  • 25. 
    In response to increased ventricular filling
    • A. 

      Total peripheral resistance increases

    • B. 

      Sympathetic nerves release norepinephrine

    • C. 

      Mycardial cell stretch

    • D. 

      Myocardial contractility


  • 26. 
    Venous return is increased by all of the following except:
    • A. 

      Exhalation

    • B. 

      The skeletal muscle pump

    • C. 

      Hypertension

    • D. 

      Sympathetic stimulation of veins


  • 27. 
    Edema would be induced by all of the following except:
    • A. 

      Hypertension

    • B. 

      Protein malnutrition

    • C. 

      Lymphatic blockage

    • D. 

      Hyperthyroidism


  • 28. 
    Coronary bypass surgery is performed
    • A. 

      To limit myocardial ischemia

    • B. 

      To increase blood pressure

    • C. 

      In response to an aneurysm

    • D. 

      In response to hypertension


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