Cardiac Physiology with m-mode

What phase of the cardiac cycle is characterized by the opening of the aortic valve?

• Isovolumic contraction

• Ejection

• Isovolumic relaxation

• Diastasis

During which phase does the mitral valve close?

• Atrial systole

• Isovolumic contraction

• Rapid inflow

• Diastasis

Which pressure is highest during the ejection phase?

• Atrial pressure

• Ventricular pressure

• Aortic pressure

• Phonocardiogram

What is the period of relaxation in the cardiac cycle called?

• Systole

• Diastole

• Contraction

• Ejection

During which phase of the cardiac cycle does the heart fill with blood?

• Systole

• Diastole

• Ejection

• Contraction

What is the period of contraction in the cardiac cycle called?

• Diastole

• Relaxation

• Systole

• Filling

What happens to the mitral and tricuspid valves during atrial diastole?

• They are open

• They are closed

• They are partially open

• They are malfunctioning

When do the atrioventricular (MV & TV) valves open?

• When the pressure in the ventricles exceeds the atria

• When the pressure and volume in the atria exceed the ventricles

• When the heart is in systole

• When the ventricles are empty

What occurs during early ventricular diastole?

• The ventricles contract

• The blood from the atria fills the ventricles

• The atria contract

• The ventricles empty

What happens to the blood flow into the ventricles as the volume and pressure in the atria decrease?

• It speeds up

• It slows down

• It remains constant

• It stops completely