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The sinoatrial (SA) node is the natural pacemaker of the heart and initiates electrical impulses for contraction. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function.
The Sinoatrial (SA) node generates electrical impulses to regulate the heartbeat.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Circulatory System - Comparative and Evolutionary Aspects
The SA node, also called the pacemaker of the heart, initiates the heartbeat by generating electrical impulses.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Circulatory System - Comparative and Evolutionary Aspects
The sinoatrial (SA) node is located in the right atrial wall near the opening of the superior vena cava. It generates rhythmic electrical impulses and acts as the natural pacemaker of the heart.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Regulation and Disorders of Circulatory System
Bradycardia is a condition where the heart rate is slower than normal due to SA node dysfunction.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Regulation and Disorders of Circulatory System
The SA node (sinoatrial node) acts as the pacemaker of the heart, initiating electrical impulses that regulate heartbeats.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
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