Question

How much blood does atrial systole add to the ventricles?Which is also referred to as?

A) 50 ml, Diastasis
B) 70 ml, Atrial kick
C) 30 ml, Ventricular ejection
D) 100 ml, Systolic reserve

Answer 1

Atrial systole, or the 'atrial kick,' contributes 20-30 percent of filling to the ventricles, resulting in an additional 50-60 mL of blood in the ventricles before ventricular systole.

Step-by-step explanation:

Atrial systole, also known as the 'atrial kick,' contributes 20-30 percent of filling to the ventricles. At the end of atrial systole, the ventricles still contain approximately 50-60 mL of blood, known as the end systolic volume (ESV). This occurs before ventricular systole, where the blood is pumped out of the heart.