yes
The sinoatrial, or SA, node is known as the pacemaker of the heart. There are other potential pacemakers if the SA node fails, but it is the main pacemaker.
The SA node is the "pacemaker" of the heart. Cells in the SA node are called "pacemaker" cells and they direct the contraction rate of the entire heart by generating action potentials.
The primary pacemaker of a normal healthy heart is the sinus node (or SA node). It is located in the right atria of the heart.
The heart's "pacemaker" is the SA (sinoatrial) node.
The primary pacemaker of the mammalian heart is the sino-atrial node. If the SA node fails, the atrioventricular node (AV node) takes over pacemaking.
The SA Node.
SA node (Sinus Node)
The SA node normally functions as the pacemaker for the entire heart because its intrinsic rate is the fastest in the system. From the SA node, impulses spread out over the atria, causing them to contract.
No, the purkinje fiber is not the natural pacemaker. The sinoatrial node (SA node) is the natural pacemaker of the heart.
SA node (Sinus Node)
sinoatrial node (SA)
The group of cells responsible for adjusting the heart rate are known as the sinoatrial node (SA node) and the atrioventricular node (AV node). The SA node generates the electrical impulses that initiate each heartbeat, while the AV node delays the impulse to allow the atria to contract before the ventricles. Together, these nodes help regulate the heart rate and ensure proper coordination of heart contractions.