Origin of heart beat and its conduction is represented by
Origin of heart beat and its conduction is represented by
The correct option is D SA node - AV node - Bundle of His - Purkinje fibres
The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimulated by electrical impulses from a natural pacemaker, the sinoatrial, or SA, node located in the muscle of the right atrium.
The electrical signal generated by the SA node moves from cell to cell down through the heart until it reaches the atrioventricular node (AV node), a cluster of cells situated in the center of the heart between the atria and ventricles. The AV node serves as a gate that slows the electrical current before the signal is permitted to pass down through to the ventricles. This delay ensures that the atria have a chance to fully contract before the ventricles are stimulated.
The bundle of His, formed of a group of heart muscle cells, transmits the electrical impulses generated at paced intervals by the atrioventricular node (AV), to the right and left ventricles. The signal is conducted via specialized channels, which branch from the bundle of His, and contact purkinje fibers.
Purkinje fibers are networks of fibers that receive conductive signals originating at the AV node.
After passing the AV node, the electrical current travels to the ventricles along special fibers embedded in the walls of the lower part of the heart.
SA node - AV node - Bundle of His - Purkinje fibres
The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimulated by electrical impulses from a natural pacemaker, the sinoatrial, or SA, node located in the muscle of the right atrium.
The electrical signal generated by the SA node moves from cell to cell down through the heart until it reaches the atrioventricular node (AV node), a cluster of cells situated in the center of the heart between the atria and ventricles. The AV node serves as a gate that slows the electrical current before the signal is permitted to pass down through to the ventricles. This delay ensures that the atria have a chance to fully contract before the ventricles are stimulated.
The bundle of His, formed of a group of heart muscle cells, transmits the electrical impulses generated at paced intervals by the atrioventricular node (AV), to the right and left ventricles. The signal is conducted via specialized channels, which branch from the bundle of His, and contact purkinje fibers.
Purkinje fibers are networks of fibers that receive conductive signals originating at the AV node.
After passing the AV node, the electrical current travels to the ventricles along special fibers embedded in the walls of the lower part of the heart.
