MICROANATOMY

Detailed explanation-1: -The sinus node continuously generates electrical impulses, thereby setting the normal rhythm and rate in a healthy heart. Hence, the SA node is referred to as the natural pacemaker of the heart.

Detailed explanation-2: -The SA node is considered the pacemaker of the heart. Its electrical signals normally cause the atria of an adult’s heart to contract at a rate of about 60 to 100 times a minute.

Detailed explanation-3: -The heart’s natural pacemaker is a cluster of cells. Doctors refer to it as the sinoatrial (SA) node or sinus node. The SA node produces electrical impulses that set the heart rate and rhythm. The SA node is one of the most important tissues in the body as it initiates every heartbeat.

Detailed explanation-4: -The SA node is often referred to as a natural pacemaker because it generates a series of electrical pulses at regular intervals. The pulse is then sent to a group of cells known as the atrioventricular node (AV node). The AV node relays the pulse to the 2 lower chambers of the heart (the ventricles).

Detailed explanation-5: -The sinus node is the heart’s natural pacemaker. It’s a small mass of specialized cells in the top of the right atrium (upper chamber of the heart). It produces the electrical impulses that cause your heart to beat. A chamber of the heart contracts when an electrical impulse or signal moves across it.