Lesson Plan: The Regulation of a Heartbeat Biology

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to describe the electrical regulation of a heartbeat and recall what is meant by systole and diastole.


Students will be able to

  • recall that the heart is myogenic and that control of the cardiac cycle is carried out by the cardiac muscle,
  • identify the location of the sinoatrial node (SAN), the atrioventricular node (AVN), the Purkinje/Purkyně fibers, and the bundle of His,
  • state that the SAN is the pacemaker of the heart,
  • describe how the sounds of a heartbeat originate from the closure of atrioventricular valves and the closure of aortic and pulmonary valves,
  • explain how electrical transmissions across the heart regulate the human heartbeat,
  • understand how blood pressure can be measured and interpret systolic and diastolic readings,
  • recall that in veins and blood vessels further from the heart, blood pressure will be lower.


Students should already be familiar with

  • the heart as a major organ of the body,
  • the heart pumping blood around the body.


Students will not cover

  • communication between the brain and SAN.

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