NEET PG DENTAL EXAM

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 normal range for sinus rhythm is 60-100 beats/minute. Sinus rates below this range are termed sinus bradycardia and sinus rates above this range are termed sinus tachycardia.

Detailed explanation-3: -SA node: The SA node (SA stands for sinoatrial) is one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the heart to contract and pump blood.