pacemaker cells

Pacemaker cells are specialized cells in the heart that generate electrical signals to regulate heartbeat. Located mainly in the sinoatrial (SA) node, these cells spontaneously produce rhythmic electrical impulses without external prompts. These signals cause the heart muscles to contract, controlling the heartbeat's speed and rhythm. This automatic activity ensures the heart beats consistently, maintaining effective blood circulation throughout the body. Pacemaker cells' ability to generate and coordinate electrical signals is essential for a healthy, steady heartbeat.