Because it have a pressure it must pump the blood and carry it away from the heart
Artery walls are so strong because they endure a large amount of pressure from the pumping of the heart. They must be strong and elastic so they can remain in tacked.
Because arteries are narrower, thus increasing the pressure in the arteries. So you need thicker walls to contain the blood under pressure.
They don't need to be as strong as the arteries because as blood is returned to the heart, it is under less pressure. Blood in arteries is under intense pressure from the heart, which is a pump.
The heart pumps the blood out in high pressure so the artery walls are strong and elastic,the walls are thick and contains thick layers of muscle to make them strong , and elastic fibres to allow them to stretch and spring back
liquid can leak in and out of capillaries, and arteries and veins have such thick walls, and their jobs are just to bring blood to and from the heart. NO need for diffusion in these.
Veins and arteries need strong thick walls where there is high blood pressure. The highest pressure is close to the heart because the blood is being forced through only a few vessels instead of the thousand of tiny capillaries that are found further away from the heart
Because arteries are narrower, thus increasing the pressure in the arteries. So you need thicker walls to contain the blood under pressure.
The arteries' walls.
The arterial walls are thicker because they need to withstand the pressure coming from the heart.
They don't need to be as strong as the arteries because as blood is returned to the heart, it is under less pressure. Blood in arteries is under intense pressure from the heart, which is a pump.
They don't need to be as strong as the arteries because as blood is returned to the heart, it is under less pressure. Blood in arteries is under intense pressure from the heart, which is a pump.
They don't need to be as strong as the arteries because as blood is returned to the heart, it is under less pressure. Blood in arteries is under intense pressure from the heart, which is a pump.
Arteries have thicker wall because the pressure in the arteries is much higher.
The heart pumps the blood out in high pressure so the artery walls are strong and elastic,the walls are thick and contains thick layers of muscle to make them strong , and elastic fibres to allow them to stretch and spring back
The blood vessels that carry blood away from the heart, arteries, need to withstand the pressure exerted by the heart as it pumps to the blood to the lungs and to all the tissues of the body. These have thicker muscular walls, veins deal with far less pressure, so their muscular layer is thinner.
Is the abnormal softening of the walls of an artery or arteries
Have thinner walls.
Veins and arteries need strong thick walls where there is high blood pressure. The highest pressure is close to the heart because the blood is being forced through only a few vessels instead of the thousand of tiny capillaries that are found further away from the heart