A : Isovolumetric systole of a normal cardiac cycle is responsible for the opening of semilunar valves causing the blood flow into aortic aorta and pulmonary aorta.
R : During isovolumetric systole, intraventricular pressure increases as semilunar and AV valves are closed and ventricles are contracting .

Assertion : First heart sound (LUBB) is produced at the beginning of ventricular systole stage. Reason : During ventricular systole semilunar valves are closed.

Assertion : First heart sound (LUBB) is produced at the beginning fo ventricular systole stage. Reason : During ventricular systole semilunar valves are closed.

During the cardiac cycle valves that open at the end of isovolumetric contraction

During the cardiac cycle valves that open at the end of isovolumetric contraction

Read the following statements and select the correct option. A. Damage to chordae tendinae of semilunar valves in aorta causes back flow of blood in left ventricle. B. Closure of atrio-ventricular valves during ventricular systole generates first heart sound.

Read the following statements and select the correct option A. Damage to chordae tendinae of semilunar valves in aorta causes back flow of blood in left ventricle.B. Closure of atrio-ventricular valves during ventricular systole generates first heart sound,

Read the given statements and select the correct option w.r.t. true and false : (a) Duration of each cardiac cycle is 0.8 seconds which can be altered in fear or fight conditions, (b) Rapid passive ventricular filling takes place when auricles are in diastole and auriculoventricular valves remain closed, (c) Semilunar valves open when intraventricular pressure exceeds the pressure within aorta, (d) Sinoatrial node comprises of autoexcitable tissue.

Read the given statements and select the correct option w.r.t. true and false : br (a) Duration of each cardiac cycle is 0.8 seconds which can be altered in fear or fight conditions, br (b) Rapid passive ventricular filling takes place when auricles are in diastole and auriculoventricular valves remain closed, br (c) Semilunar valves open when intraventricular pressure exceeds the pressure within aorta, br (d) Sinoatrial node comprises of autoexcitable tissue.

What will happen during the ventricular systole? a. Bicuspid and tricuspid valves are open b. Bicuspid and tricuspid valves are closed (c ). Semilunar valves are open d. Semilunar valves are close