0
Why are walls of the aorta thicker than walls of the pulmonary artery?
Wiki User
∙ 16y ago
The average pressure pumped through the aorta is about 120mmHg during systole. The average pressure pumped through the pulmonary artery is only 9-18mmHg. The reason for this is simply because of the volume of blood, the resistance to flow by the different pathways they take and so on. But the main point is that to maintain functional integrity and not hypertrophy or cause aneurysm, the aorta must be much thicker with a pressure that great.
Wiki User
∙ 12y ago
Wiki User
∙ 15y agoArteries have thicker epithelium/muscular/elastic walls compared to veins, because they have to cope with a much greater pressure. The heart needs to pump blood at high pressures to ensure that the blood reaches all the cells of the body, from the brain to the toes. Thicker walls allow the arteries to cope with the pressure, instead of rupturing.
Wiki User
∙ 14y agothe walls of aorta are thicker than the superior vena cava because the aorta need to pump blood to the whole body, which means a big amount of blood, also the wall is thicker because it pumps blood with a lot of pressure
Wiki User
∙ 13y agoArterial blood pressure will be higher than venous blood pressure. The force generated by the heart as it pushes blood out requires thick vessel wall so it does not rupture. The vena cava simply carries blood back to the heart, there is much less force/pressure in the vena cava.
Wiki User
∙ 13y agoThe aorta and the pulmonary artery have thicker muscle walls than veins because there is more pressure in ateries than veins. The heart pumps blood out into the body through the arteries and the thick muscle walls make them strong enough to withstand the pressure. When the blood is on the way back to the heart through the veins, there is much less pressure.
Wiki User
∙ 16y agoBecause the artery walls can stretch due to blood pressure
Add your answer:
Earn +20 pts
Compare the thickness of the walls of the superior and inferior vena cava and the aorta?
The aorta has significantly thicker walls than the superior and inferior venae cavae as the aorta is an artery that must respond to significant intraluminal pressures whereas the venae cavae are veins that have minimal intraluminal pressure.
What is the difference between the walls of the renal artery and the hilus region?
The renal artery is off to the side of the abdominal aorta, supplying and carrying a large portion of total blood to the kidneys. The helium is located above and behind the lung, and is where the pulmonary artery, superior and inferior pulmonary veins, lymphatic vessels, and bronchus with bronchial veins and arteries enter and exit.
What is the thickness of an artery's walls?
It all depends on which one you are comparing, because they come in large ones like the Aorta, down to tiny ones called arterioles. In any case, they are thicker than their corresponding vein.
Which layer of the artery wall thickens most in atherosclerosis?
The tunica media is the thickest layer of of an artery
Is the walls of a artery thicker than a vein?
Veins have thin walls because blood that flows through them is usually low in pressure while the blood that flows through the arteries are usually of high pressure. The walls are thick to prevent bursting.
Does vena cava or aorta have thicker walls?
The aorta has thicker walls as it is an artery not vein.
What vessel is the blood pumped from the left ventricle?
Blood is pumped by both the left and right ventricles. Blood pumped by the right ventricle is to the lungs only while the left ventricle pumps to the rest of the body. This is why the walls of the left ventricle are significantly thicker than the walls of the right.
Compare the thickness of the walls of the superior and inferior vena cava and the aorta?
The aorta has significantly thicker walls than the superior and inferior venae cavae as the aorta is an artery that must respond to significant intraluminal pressures whereas the venae cavae are veins that have minimal intraluminal pressure.
What is the significance of the difference in thickness between the aorta and the pulmonary trunk?
To put it simply: The blood in the aorta has to go all around the body. Blood in the pulmonary trunk has to go all around the lungs. The body is, obviously, larger than the lungs. This means blood going around the body needs to be "pushed" more. This is because there is more resistance. For example, it's harder to push a car for 1 mile, then it is to push it 1 metre. Because the blood has to be pushed more, the heart (left ventricle) pumps it out at a higher pressure. Similarly, because the blood going around the lungs doesn't need to go so far, the heart (right ventricle) pumps it out at a lower pressure. Because the blood in the aorta is at higher pressure than the pulmonary trunk, it needs to have thicker walls. For example a fire hose is thicker than a garden hose because it needs to transport water at a higher pressure. The aorta contains large amount of smooth muscle and elastic tissue to help it cope with the high blood pressure.
What is the difference between the walls of the renal artery and the hilus region?
The renal artery is off to the side of the abdominal aorta, supplying and carrying a large portion of total blood to the kidneys. The helium is located above and behind the lung, and is where the pulmonary artery, superior and inferior pulmonary veins, lymphatic vessels, and bronchus with bronchial veins and arteries enter and exit.
Are the walls in arteries thicker than the walls in veins?
The arterial walls are thicker because they need to withstand the pressure coming from the heart.
What is the thickness of an artery's walls?
It all depends on which one you are comparing, because they come in large ones like the Aorta, down to tiny ones called arterioles. In any case, they are thicker than their corresponding vein.
Is the wall of an artery thicker than that of a vein?
Yes. For equivalently sized arteries and veins, arterial walls are significantly thicker.
Which layer of the artery wall thickens most in atherosclerosis?
The tunica media is the thickest layer of of an artery
In comparing a parallel artery and vein you would find what?
In comparing a parallel artery and vein, you would find that the vein had thinner walls and a darker color. The artery would have thicker, more muscular walls and a brighter red color.
What type of vessel holds the greatest volume of blood?
Veins, but there walls aren't that thick.
Is the walls of a artery thicker than a vein?
Veins have thin walls because blood that flows through them is usually low in pressure while the blood that flows through the arteries are usually of high pressure. The walls are thick to prevent bursting.
