SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An auricular diastole and a systole
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A ventricular systole and diastole
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An auricular systoles and ventricular systole
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An auricular systole,a ventricular systole and a pause
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Detailed explanation-1: -Atrial systole: lasts about 0.1 seconds-both atria contract and force the blood from the atria into the ventricles. Ventricular systole: lasts about 0.3 seconds-both ventricles contract, blood is forced to the lungs via the pulmonary trunk, and the rest of the body via the aorta.
Detailed explanation-2: -The Atrial and Ventricular diastole – relaxed chambers filling with blood, the Atrial systole – contraction of atria, remaining blood is pushed into ventricles, the Ventricular systole – contraction of ventricles forcing the blood out through the aorta and pulmonary artery.
Detailed explanation-3: -Ventricular Systole refers to the phase of the cardiac cycle where the left and right ventricles contract at the same time and pump blood into the aorta and pulmonary trunk, respectively.
Detailed explanation-4: -A cardiac cycle is defined as the steps involving the conversion of deoxygenated blood to oxygenated blood in the lungs and pumping it by the heart to the body through the aorta [40].