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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 interventricular septum separates the left and right ventricles, preventing mixing of oxygenated and deoxygenated blood.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Circulatory System - Comparative and Evolutionary Aspects
The left ventricle pumps blood into the aorta, not the pulmonary artery. The right ventricle pumps blood into the pulmonary artery.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
The pulmonary valve prevents backflow of blood into the right ventricle after it enters the pulmonary artery.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
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