11
Question
Contraction of heart is called as
Contraction of heart is called as
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Solution
The correct option is B Systole
The cardiac cycle comprises of alternate events of contraction (systole) and relaxation (diastole). The first stage of cardiac cycle, "diastole", is when the semilunar valves (the pulmonary valve and the aortic valve) close, the atrio-ventricular (AV) valves (the mitral valve and the tricuspid valve) open, and the whole heart is relaxed.
Systole is the part of the cardiac cycle, when the heart contracts.
The cardiac cycle comprises of alternate events of contraction (systole) and relaxation (diastole).
The first stage of cardiac cycle, "diastole", is when the semilunar valves (the pulmonary valve and the aortic valve) close, the atrio-ventricular (AV) valves (the mitral valve and the tricuspid valve) open, and the whole heart is relaxed.
Systole is the part of the cardiac cycle, when the heart contracts.
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