Latest questions in this category.
The bicuspid valve is also called the mitral valve and is located between the left atrium and left ventricle.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
The bicuspid valve is also called the mitral valve and is located between the left atrium and left ventricle.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
The "Lub" sound occurs when the AV valves (tricuspid and bicuspid) close, while the "Dub" sound occurs when the semilunar valves close.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
The cardiac cycle consists of systole (contraction) and diastole (relaxation) of the heart chambers.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
Diastole is the relaxation phase of the heart, allowing blood to fill the chambers.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
Systole refers to the contraction phase of the heart, during which blood is pumped out.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
The right atrium receives deoxygenated blood from the body via the superior and inferior vena cava.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
The tricuspid valve lies between the right atrium and right ventricle. It prevents the backflow of blood into the right atrium during ventricular systole.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
Purkinje fibres rapidly conduct electrical impulses throughout the ventricular walls, producing a synchronized contraction of both ventricles for efficient pumping of blood.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
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
Pulmonary circulation carries oxygenated blood from the lungs to the left atrium of the heart.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
Pulmonary veins carry oxygenated blood from the lungs to the left atrium, not deoxygenated blood.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Human Heart - Structure and Cardiac Cycle
