Cardiac Cycle

Cardiac Cycle

Author: Nathan Lampson

This lesson will explain the steps that occur when your heart muscle contracts. It will investigate the cardiac cycle and the cardiac conduction system.

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Terms to Know
  • Cardiac Cycle

    All of the events that occur during one heart beat that drive blood flow into and out of the heart; a series of well-timed pressure and volume changes within the chambers of the heart that drive blood flow throughout its chambers.

  • Diastole

    A term used to describe a decrease in pressure and work; measured in millimeters of mercury (mmHg).

  • Systole

    A term used to describe an increase in pressure and work; measured in millimeters of mercury (mmHg).