Podcast
Questions and Answers
During ventricular diastole, what mechanical event occurs due to the pressure difference between the ventricles and the aorta/pulmonary trunk?
During ventricular diastole, what mechanical event occurs due to the pressure difference between the ventricles and the aorta/pulmonary trunk?
- AV valves shutting
- Semilunar valves opening (correct)
- Atria contraction
- Turbulence of blood
Which event occurs during ventricular systole that leads to the first heart sound (LUB) shortly after the QRS wave starts?
Which event occurs during ventricular systole that leads to the first heart sound (LUB) shortly after the QRS wave starts?
- Semilunar valves opening
- AV valves shutting (correct)
- Turbulence of blood
- Atria contraction
What phase of the cardiac cycle is characterized by the ventricles having the highest pressure, leading to blood flowing out of them?
What phase of the cardiac cycle is characterized by the ventricles having the highest pressure, leading to blood flowing out of them?
- Ventricular diastole
- Atrial systole
- Ventricular systole (correct)
- Atrial diastole
Which part of the heart experiences higher pressure during ventricular diastole?
Which part of the heart experiences higher pressure during ventricular diastole?
What is the primary factor that forces the semilunar valves open during ventricular diastole?
What is the primary factor that forces the semilunar valves open during ventricular diastole?
Which statement best describes the flow of blood during ventricular systole?
Which statement best describes the flow of blood during ventricular systole?
What event occurs during atrial systole following the P wave?
What event occurs during atrial systole following the P wave?
What mechanical event is responsible for causing turbulence of blood and giving rise to the first heart sound (LUB)?
What mechanical event is responsible for causing turbulence of blood and giving rise to the first heart sound (LUB)?
Which phase of the cardiac cycle is characterized by atrial relaxation and 80% of blood being delivered into the ventricles passively?
Which phase of the cardiac cycle is characterized by atrial relaxation and 80% of blood being delivered into the ventricles passively?
What phase of the cardiac cycle involves higher pressure in the ventricles than in the atria, leading to AV valve closure and turbulence of blood?
What phase of the cardiac cycle involves higher pressure in the ventricles than in the atria, leading to AV valve closure and turbulence of blood?
