Circulatory system query? Please give support to?
Answers: Its certainly not continually moving. The veins hold valves which prevent the backflow of de-oxygenated blood from flowing backwards surrounded by the system during replorization of the heart (rest period). When the heart pumps blood out of the left ventricle the pressure cause the valves contained by the veins to depart and allow blood to flow. When the heart is at rest it slows right down. This is why you can feel a pulse within the arteries. Its the movement of the blood in the artery.
Frankly, right atrial pressure provides the angle for blood to return to the heart. The arterial wall consists of many layer, chemoreceptors and muscles. These muscular walls ensure that there is sufficient resistance within the systemic arteries that perfusion of vital organs is sustained even during diastole.
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