PSIO202 1.5-1.8

During passive filling of the ventricles, AV valves are open.

• true

• false

What is end systolic volume (ESV)?

• the volume of blood in a ventricle at the end of atrial systole

• the volume of blood in a ventricle at the end of ventricular systole

• the volume of blood in an atrium at the end of atrial systole

• when the volume of blood in a ventricle is at its lowest

EDV (end diastolic volume) is the volume of blood in a ventricle at the end of ventricular ____.

EDV is (</>) than ESV.

During isovolumetric contraction, what valves are open?

Isovolumetric contraction is when the blood volume in the ventricles stays the same and pressure increases. This is the very beginning of ventricular systole. This happens right before the ___ valves open.

When are the atria and ventricles in systole at the same time.

When are the atria and ventricles in diastole at the same time?

• during isovolumetric contraction

• during the QRS complex is where this overlap occurs

• at the end of the P wave and the beginning of the T wave is where this overlap occurs

• during active filling of the ventricles

When does S1 occur?

• When both AV valves shut

• At the very beginning of isovolumetric contraction

• At the very beginning of ventricular systole

• during "lub"

When does S2 occur?

• When semilunar valves slam shut

• At the beginning of ventricular diastole

• At the beginning of isovolumetric relaxation

• During active filling of the ventricles