SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Slower in children than in adults
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Dependent on speed of the blood
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Set up by systole in the ventricles
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Caused by the flow of blood into the heart
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Detailed explanation-1: -Hence, the Pulse wave is mainly caused by the systole of the left ventricle.
Detailed explanation-2: -The pulse is caused by the sudden increase in blood pressure, ejected by the left ventricle into the aorta and large arteries.
Detailed explanation-3: -A pulse is felt as the expansion of the arteries during ventricular systole. Can be influenced by body position, activity, and emotions. Determination of heart rate is one method to evaluate an individual’s health.
Detailed explanation-4: -During systole, the two ventricles develop pressure and eject blood into the pulmonary artery and aorta. At this time the AV valves are closed and the semilunar valves are open. The semilunar valves are closed and the AV valves are open during diastole.