Cardiovascular Physiology Questions
A sudden fall in arterial blood pressure as occurs when a person rapidly stands up
causes
a. increased stimulation of nucleus tractus solitarius
b. increased firing of the carotid sinus baroreceptors
c. increased sympathetic adrenergic efferent activity
d. decreased firing of carotid body receptors - ---------------ANS: c. increased
sympathetic adrenergic efferent activity
All of the following are inotropic agents EXCEPT:
a. Catecholamines
b. Verapamil
c. Cardiac glycosides
d. high [Ca++]
e. Low [Na+] - ---------------ANS: b. Verapamil is a calcium channel blocker
All of the following have negative chronotropic effects EXCEPT:
a. Decrease steepness of phase 4
b. Making diastolic potential longer
c. Make maximum p diastolic potential more negative
d. Make diastolic potential more positive
e. Make threshold for action potential higher - ---------------ANS: d. Make diastolic
potential more positive
All of the following have positive chronotropic effects EXCEPT:
a. Shortening to to reach threshold
b. Decreasing phase 4
c. Making diastolic longer
d. Threshold of action potential becomes more negative
e. Maximum diastolic potential increases - ---------------ANS: c. making diastolic
longer slows down
All of the following increase viscosity EXCEPT:
a. increase in fibrinogen concentration
b. increase hematocrit
c. Low temperature
d. increasing flow - ---------------ANS: d. increasing flow
, All of the following occur during diastole except:
a. isovolumetric ventricular relaxation
b. additional ventricular filling
c. opening of AV valves
d. atrial contraction
e. opening of semilunar valves - ---------------ANS: e. opening of semilunar valves
All of the following occur during systolic EXCEPT:
a. Rapid ventricular ejection
b. Decreased ventricular filling
c. isovolumetric ventricular contraction
d. opening of pulmonary and aortic valves
e. Decreased ventricular ejection - ---------------ANS: b. Decreased ventricular filling
All of the following occur during the opening of AV valves EXCEPT:
a. rapid ventricular filling
b. rapid ventricular ejection
c. diastasis
d. atrial contraction - ---------------ANS: b. rapid ventricular ejection
An elderly woman with heart failure complains of swelling in her legs. Each of the
following can help to alleviate her edema EXCEPT:
a. increasing tissue interstitial pressure in limbs with compression stockings
b. elevating her feet to lower venous pressure
c. giving her a vasodilator drug to reduce precapillary resistance
d. lower capillary and venous pressures by reducing blood volume through use of
diuretic drug - ---------------ANS: c. giving her a vasodilator drug to reduce
precapillary resistance
ANP release by the kidneys decreases renin release which leads to a reduction in
blood volume and arterial pressure
True or False - ---------------ANS: False
Aortic valve opens when the aortic pressure surpasses the ventricular pressure
TRUE or FALSE - ---------------ANS: FALSE
Ventricular pressure will surpass aortic pressure to open valve
A sudden fall in arterial blood pressure as occurs when a person rapidly stands up
causes
a. increased stimulation of nucleus tractus solitarius
b. increased firing of the carotid sinus baroreceptors
c. increased sympathetic adrenergic efferent activity
d. decreased firing of carotid body receptors - ---------------ANS: c. increased
sympathetic adrenergic efferent activity
All of the following are inotropic agents EXCEPT:
a. Catecholamines
b. Verapamil
c. Cardiac glycosides
d. high [Ca++]
e. Low [Na+] - ---------------ANS: b. Verapamil is a calcium channel blocker
All of the following have negative chronotropic effects EXCEPT:
a. Decrease steepness of phase 4
b. Making diastolic potential longer
c. Make maximum p diastolic potential more negative
d. Make diastolic potential more positive
e. Make threshold for action potential higher - ---------------ANS: d. Make diastolic
potential more positive
All of the following have positive chronotropic effects EXCEPT:
a. Shortening to to reach threshold
b. Decreasing phase 4
c. Making diastolic longer
d. Threshold of action potential becomes more negative
e. Maximum diastolic potential increases - ---------------ANS: c. making diastolic
longer slows down
All of the following increase viscosity EXCEPT:
a. increase in fibrinogen concentration
b. increase hematocrit
c. Low temperature
d. increasing flow - ---------------ANS: d. increasing flow
, All of the following occur during diastole except:
a. isovolumetric ventricular relaxation
b. additional ventricular filling
c. opening of AV valves
d. atrial contraction
e. opening of semilunar valves - ---------------ANS: e. opening of semilunar valves
All of the following occur during systolic EXCEPT:
a. Rapid ventricular ejection
b. Decreased ventricular filling
c. isovolumetric ventricular contraction
d. opening of pulmonary and aortic valves
e. Decreased ventricular ejection - ---------------ANS: b. Decreased ventricular filling
All of the following occur during the opening of AV valves EXCEPT:
a. rapid ventricular filling
b. rapid ventricular ejection
c. diastasis
d. atrial contraction - ---------------ANS: b. rapid ventricular ejection
An elderly woman with heart failure complains of swelling in her legs. Each of the
following can help to alleviate her edema EXCEPT:
a. increasing tissue interstitial pressure in limbs with compression stockings
b. elevating her feet to lower venous pressure
c. giving her a vasodilator drug to reduce precapillary resistance
d. lower capillary and venous pressures by reducing blood volume through use of
diuretic drug - ---------------ANS: c. giving her a vasodilator drug to reduce
precapillary resistance
ANP release by the kidneys decreases renin release which leads to a reduction in
blood volume and arterial pressure
True or False - ---------------ANS: False
Aortic valve opens when the aortic pressure surpasses the ventricular pressure
TRUE or FALSE - ---------------ANS: FALSE
Ventricular pressure will surpass aortic pressure to open valve
