Electrical Activitry of the Heart Graphics.pptx

Sinus Node (SA Node): Located in the upper part of the right atrium, the sinus node generates the heart’s electrical signal. It acts as the “natural pacemaker,” controlling both the heart rate (between 60 and 100 beats per minute) and the orderly spread of electrical impulses across the heart....

Sinus Node (SA Node): Located in the upper part of the right atrium, the sinus node generates the heart’s electrical signal. It acts as the “natural pacemaker,” controlling both the heart rate (between 60 and 100 beats per minute) and the orderly spread of electrical impulses across the heart.
Atria: The electrical signal spreads across the right and left atria (the top chambers), causing them to contract. This process is called atrial depolarization, which pushes blood into the ventricles.
Atrioventricular Node (AV Node): The signal then travels from the sinus node to the AV node. This specialized tissue separates the atria from the ventricles and ensures proper coordination of heartbeats.
Ventricles: Finally, the electrical impulse reaches the ventricles (the bottom chambers), causing them to contract and pump blood throughout the body12.
Remember, this intricate system ensures that your heart beats rhythmically and efficiently!