Podcast
Questions and Answers
Which factor is directly proportional to end-diastolic volume (EDV)?
Which factor is directly proportional to end-diastolic volume (EDV)?
- Preload (correct)
- Stroke volume
- Contractility
- End-systolic volume
Increased venous return leads to an increase in end-systolic volume (ESV).
Increased venous return leads to an increase in end-systolic volume (ESV).
False (B)
What is the Frank-Starling Principle?
What is the Frank-Starling Principle?
As end-diastolic volume increases, stroke volume increases.
The amount of blood that remains in the ventricle at the end of ventricular systole is known as _____ .
The amount of blood that remains in the ventricle at the end of ventricular systole is known as _____ .
Match the following factors with their effect on stroke volume:
Match the following factors with their effect on stroke volume:
What is the primary hormone responsible for increasing heart rate through sympathetic stimulation?
What is the primary hormone responsible for increasing heart rate through sympathetic stimulation?
The Bainbridge reflex directly adjusts heart rate in response to blood pressure changes.
The Bainbridge reflex directly adjusts heart rate in response to blood pressure changes.
What effect does increased venous return have on heart rate?
What effect does increased venous return have on heart rate?
The stroke volume (SV) is calculated using the formula SV = EDV - _____ .
The stroke volume (SV) is calculated using the formula SV = EDV - _____ .
Match the following components with their respective effects on heart rate:
Match the following components with their respective effects on heart rate:
What happens to heart rate when the stretch receptors in the right atrium are activated?
What happens to heart rate when the stretch receptors in the right atrium are activated?
A faster heart rate contributes to a longer duration of ventricular diastole.
A faster heart rate contributes to a longer duration of ventricular diastole.
What determines the filling time of the ventricles?
What determines the filling time of the ventricles?
Which of the following factors increases stroke volume?
Which of the following factors increases stroke volume?
Increased afterload decreases stroke volume.
Increased afterload decreases stroke volume.
What is the relationship between end-diastolic volume (EDV) and stroke volume (SV)?
What is the relationship between end-diastolic volume (EDV) and stroke volume (SV)?
Cardiac output (CO) is calculated as heart rate (HR) times _____.
Cardiac output (CO) is calculated as heart rate (HR) times _____.
Match the following terms with their definitions:
Match the following terms with their definitions:
Which factors decrease stroke volume?
Which factors decrease stroke volume?
Adrenaline decreases heart rate and stroke volume.
Adrenaline decreases heart rate and stroke volume.
Name one factor that affects venous return.
Name one factor that affects venous return.
Increased sympathetic stimulation results in _____ contractility.
Increased sympathetic stimulation results in _____ contractility.
Which hormone is NOT known to increase heart contractility?
Which hormone is NOT known to increase heart contractility?
