What is a cardiac cycle briefly explain its different phases?

There are two phases of the cardiac cycle: The diastole phase and the systole phase. In the diastole phase, heart ventricles relax and the heart fills with blood. In the systole phase, the ventricles contract and pump blood out of the heart to arteries.

What is cardiac cycle explain with diagram?

The cardiac cycle is the performance of the human heart, beginning from one heartbeat to the beginning of the next. It consists of two phases:- 1) Diastolic phase, 2) Systolic phase. In the diastolic phase, the heart ventricles are relaxed and the heart fills with blood.

What are the 3 stages of the cardiac cycle and what happens during them?

The cardiac cycle has 3 stages: Atrial and Ventricular diastole (chambers are relaxed and filling with blood) Atrial systole (atria contract and remaining blood is pushed into ventricles) Ventricular systole (ventricles contract and push blood out through aorta and pulmonary artery)

Which phase of the cardiac cycle is the shortest?

atrial systole
Explanation: The shortest phase of cardiac cycle is atrial systole. The atrial systole is the last phase of a diastole during which the ventricular filling is completed.

What QRS means?

The QRS complex represents the depolarization of ventricles. It shows the beginning of systole and ventricular contraction. The QRS complex or wave starts with a small deflection downwards, represented by the point Q. It follows the P wave.

What happens during diastole?

Diastole is when the heart muscle relaxes. When the heart relaxes, the chambers of the heart fill with blood, and a person’s blood pressure decreases.

What is the cardiac cycle a level biology?

The cardiac cycle is a coordinated sequence of contractions and relaxations by the heart muscle which causes blood to move from the atria, into the ventricles and then the arteries. Muscle contractions are referred to as systole and relaxation is referred to as diastole.