What s intrinsic heart beat?

The intrinsic heartbeat refers to the natural rhythm of the heart generated by its own electrical conduction system, primarily the sinoatrial (SA) node, which is known as the heart's natural pacemaker. This intrinsic mechanism allows the heart to beat independently of external nervous system input, maintaining a regular rhythm necessary for effective blood circulation. The intrinsic heart rate typically ranges from 60 to 100 beats per minute in a resting adult. Factors such as exercise, stress, and hormonal changes can influence this rate, but the intrinsic properties remain the foundation of cardiac rhythm.