https://www.pitara.com/tags/heart-function/Recent content in Heart Function on Pitara Kids NetworkHugoen-usSat, 13 Jun 2026 21:46:31 +0530https://www.pitara.com/science-for-kids/5ws-and-h/what-is-blood-pressure/Sun, 17 Dec 2000 21:38:51 +0000https://www.pitara.com/science-for-kids/5ws-and-h/what-is-blood-pressure/<p>The heart is a live pump that delivers blood to different parts of the body. Blood flows in or flows out when the heart contracts and expands. The blood is forced into the arteries, which expand to receive the oncoming blood. The force with which the blood moves through the arteries is knows as blood pressure.</p> <p>The arteries have a muscular lining which resists this pressure. The blood is thus squeezed out into smaller blood vessels. Maximum blood pressure coincides with the steady contraction of the heart, which pushes the blood into the arteries. This maximum pressure is called systolic pressure.</p>