Question

The steps of the cardiac cycle in sequence after atrial systole _______.

• A. Isovolumic contraction, isovolumic relaxation, ejection, passive ventricular filling, active ventricular filling.
• B. Isovolumic relaxation, isovolumic contraction, ejection, passive ventricular filling, active ventricular filling.
• C. Isovolumic contraction, ejection, isovolumic relaxation, passive ventricular filling, active ventricular filling.
• D. Isovolumic contraction, ejection, isovolumic relaxation, active ventricular filling, passive ventricular filling.

Answer 1

The correct option is C

Isovolumic contraction, ejection, isovolumic relaxation, passive ventricular filling, active ventricular filling.

The cardiac cycle is made up of the following phases -

Isovolumic contraction of the ventricles, ejection of blood from the ventricles, isovolumic relaxation of the ventricles, passive ventricular filling, active ventricular filling by atrial contraction.