Cardiovascular System: Phases of the Cardiac Cycle
Overview
The cardiac cycle is the sequence of events that occur and repeat with every heartbeat. It can be divided into 2 major phases: systole and diastole, each of which subdivides into several smaller phases.
Learning Objectives
By the end of this chapter, students will be able to:
- explain the events that occur during the cardiac cycle.
- describe the role that “pressure” plays during the cardiac cycle.
- explain how the cardiac cycle overlaps with findings on an ECG.
- name the events that produce the S1 and S2 heart sounds.
Video Review
Watch the video: The Cardiac Cycle, Animation (4 minutes)
Activities
Flash Cards
Cardiac Cycle terminology
Question Sets
Chapter Attributions
This chapter by Elisabeth Kehrli and Anil Kapoor is licensed under a CC BY 4.0 license.
Media Attributions
The Cardiac Cycle, Animation by Alila Medical Media is licensed under the Standard YouTube license.
Interactive Activity Attributions
The interactive activities in this chapter are from Interactive Activities for Human Anatomy and Physiology by Open Education Lab, Ontario Tech University, and are licensed under a CC BY NC SA 4.0 license.