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Cardiac cycle
The Cardiac Cycle The cardiac cycle is the rhythmic sequence of events that occur in the heart during one heartbeat. It is divided into two phases: systole...
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The Cardiac Cycle The cardiac cycle is the rhythmic sequence of events that occur in the heart during one heartbeat. It is divided into two phases: systole...
The Cardiac Cycle
The cardiac cycle is the rhythmic sequence of events that occur in the heart during one heartbeat. It is divided into two phases: systole and diastole.
Systolic Phase
The cardiac cycle begins with systole, which is when the heart contracts. During systole, the heart pumps blood from the left ventricle to the lungs.
As the heart contracts, the blood pressure increases, and the heart rate also increases.
Systolic phase lasts for about 100 milliseconds.
Diastolic Phase
Following systole, diastole begins, which is when the heart relaxes. During diastole, the heart fills with blood from the lungs.
As the heart relaxes, the blood pressure decreases, and the heart rate also decreases.
Diastole lasts for about 120 milliseconds.
The cardiac cycle is a continuous process that ensures that blood is pumped throughout the body to supply oxygen and nutrients to cells and remove waste products