WebJan 17, 2024 · Key Terms. alveoli: Air sacs in the lungs that provide the surface for gas exchange between the air and capillaries.; pulmonary circulation: The part of blood circulation which carries oxygen-depleted blood away from the heart, to the lungs, and returns oxygenated blood back to the heart.; systemic circulation: The part of blood … WebMar 24, 2024 · After your ventricles contract to pump blood away from the heart, the aortic and pulmonary valves close and make the “dub” sound. Your heart beats an average of …
The heart - The circulatory system (CCEA) - BBC Bitesize
WebThe pressure of the blood flow in the body is produced by the hydrostatic pressure of the fluid (blood) against the walls of the blood vessels. Fluid will move from areas of high to low hydrostatic pressures. In the arteries, the hydrostatic pressure near the heart is very high and blood flows to the arterioles where the rate of flow is slowed ... WebMay 17, 2024 · Blood pumped by the heart flows through a series of vessels known as arteries, arterioles, capillaries, venules, and veins before returning to the heart. Arteries transport blood away from the heart and branch into smaller vessels, forming arterioles. Arterioles distribute blood to capillary beds, the sites of exchange with the body tissues. diary\\u0027s r1
Blood vessels leading into and out of the heart - BBC Bitesize
WebSep 7, 2024 · It also brings away the liquid and gaseous wastes of metabolism to the organs of elimination. Frog’s Heart; Structure and physiology. The heart is muscular central pumping station. It drives … Web20.1 Structure and Function of Blood Vessels. Blood pumped by the heart flows through a series of vessels known as arteries, arterioles, capillaries, venules, and veins before … WebJul 9, 2024 · Pulmonary Arteries & Pulmonary Veins. The pulmonary arteries deliver oxygen-poor blood from the right ventricle of the heart to the lungs, while the pulmonary veins deliver oxygen-rich blood from the lungs to the left atrium of the heart. For fetal circulation, there is a special hole shunt called the ductus arteriosus that is between the pulmonary … citigoe iv best of