Advanced Physiology Practice
Questions
At which point tricuspid and bicuspid valves close during the cardiac cycle? - Answer-When ventricular
pressure exceeds atrial pressure
The low-resistance pathways between myocardial cells that allow for the spread of action potentials are
the - Answer-Gap junctions
For normal condition, an increase in contractility of heart is explained on a Frank-Starling diagram by -
Answer-Increased cardiac output for a given end-diastolic volume
Cardiac output is calculated by the following equation: cardiac output = stroke volume x heart rate
Based on the following echocardiogram parameter, please calculate the cardiac output of this patient:
End-diastolic volume: 120 ml
End-systolic volume: 70 ml
Heart rates: 70 beats/min - Answer-3500 mL/min
Which of the following statement is correct about preload? - Answer-Load related to end-diastolic
volume, which is associated with right atrial pressure
During which phase of the ventricular action potential is the inflow of Ca2+ highest? - Answer-Plateau of
the action potential during phase 2
Questions
At which point tricuspid and bicuspid valves close during the cardiac cycle? - Answer-When ventricular
pressure exceeds atrial pressure
The low-resistance pathways between myocardial cells that allow for the spread of action potentials are
the - Answer-Gap junctions
For normal condition, an increase in contractility of heart is explained on a Frank-Starling diagram by -
Answer-Increased cardiac output for a given end-diastolic volume
Cardiac output is calculated by the following equation: cardiac output = stroke volume x heart rate
Based on the following echocardiogram parameter, please calculate the cardiac output of this patient:
End-diastolic volume: 120 ml
End-systolic volume: 70 ml
Heart rates: 70 beats/min - Answer-3500 mL/min
Which of the following statement is correct about preload? - Answer-Load related to end-diastolic
volume, which is associated with right atrial pressure
During which phase of the ventricular action potential is the inflow of Ca2+ highest? - Answer-Plateau of
the action potential during phase 2
