Rhythmic excitation of heart
Understand the Problem
The text extracted from the image is a title stating 'Rhythmic Excitation of Heart', likely referring to a topic in physiology or cardiology.
Answer
Pacemaker cells in nodes generate impulses for heart contractions.
Rhythmic excitation of the heart refers to the process by which specialized pacemaker cells generate electrical impulses to trigger heart muscle contractions. This process primarily involves the sinoatrial (SA) node, atrioventricular (AV) node, and the conduction pathways including the Bundle of His and Purkinje fibers.
Answer for screen readers
Rhythmic excitation of the heart refers to the process by which specialized pacemaker cells generate electrical impulses to trigger heart muscle contractions. This process primarily involves the sinoatrial (SA) node, atrioventricular (AV) node, and the conduction pathways including the Bundle of His and Purkinje fibers.
More Information
Pacemaker cells, primarily in the SA node, start the depolarization process, setting the pace for the entire heart rhythm. These cells are essential for maintaining a consistent heartbeat.
Tips
Confusing the different nodes and pathways in the heart as their roles are specific and distinct.
Sources
- Rhythmical Excitation of Heart - howMed - howmed.net
- Cardiovascular Disease: Disturbances in Rhythm and Conduction - Britannica - britannica.com
- Heart Conduction System - Cleveland Clinic - my.clevelandclinic.org
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