0
What else can I help you with?
Is the pressure in the left atrium higher than right?
Yes, the pressure in the left atrium should be much higher than the pressure on the right side. The left atrium has to push blood into the left ventricle, which is much tougher and more muscular because it has to push blood throughout the entire body. The right atrium only has to fill the right ventricle, which is only pushing blood through the lungs.
Describe the position and role of the valves in the heart?
There are 4 valves in the heart. The first valve though which the blood passes is the tricuspid which is one of the atrioventriculars (between a ventricle and an atrium) and stops backflow of blood from the right ventricle tothe right atrium. The next valve is the pulmonary valve, one of the semilunars, which stops backflow form the pulmonary artery to the right ventricle. The third valve is the mitral or bicuspid which (the other atrioventricular) which stops backflow from the left ventricle to the left atrium. The last valve is the aortic valve (the other semilunar) which stops backflow from the aorta to the left ventricel.
How much blood goes in kidneys for cleaning?
All the blood passes through
Venous blood returning to the heart enters into which atrium?
I beleive the answer to your question is vena cavai dont know much about the vena cava but pretty much any other site you go on it will tell you that the vena cava is the blood vessel that carrie blood from the body to the heart to the right atrium
The movement of oxygenated blood into the systemic system begins from?
just follow this sequence: inferior/superior vena cava (DEOXYGENATED BLOOD) --> right atrium--> passes through tricuspid valve--> right ventricle--> pulmonary artery--> lungs (OXYGENATED BLOOD)--> pulmonary veins--> left atrium--> passes through bicuspid valve--> left ventricle--> aorta--> different parts of the body. it would be much easier if you have a picture of the heart with you. then just go with the flow. you can actually begin anywhere because it's just a cycle but most books would normally start with the one I've given above.
How does blood circulate from the left atrium to the apex of the heart?
how does the blood circulate Put simply the heart is a pump, I don't know much more about it than that.
How much blood from the aorta passes into the ventricles before the atria contract?
lots :)
How much blood passes through the heart each day?
1700 litres
Why are the heart valves not very stretchy?
Because if they were, then too much blood would fill the left atrium (lower left), and it would overflow, causing too much blood to flow through the veins which could result in them breaking.
Why does the right ventricle have a thicker muscle wall than the right atrium?
The right ventricle has to pump blood out of the heart and through the lungs, to return it to the left atrium. There is a lot of resistance to blood flow through the lung capillaries, so a thick musle wall is needed to generate enough pressure to overcome this resistance. The right atrium only has to pump blood through an open valve (the tricuspid valve) into the right ventricle. There is much less resistance to this flow of blood so much less muscle is needed. See: http://www.nhlbi.nih.gov/health/dci/Diseases/hhw/hhw_anatomy.html
What are four chamber of the heart?
The four chambers of the heart are as follows:Left atriumRight atriumLeft ventricleRight ventricleThe blood travels from the body into the right atrium and is pumped through the right ventricle to the lungs. Here it exchanges gases and returns to the heart. It enters the left side of the heart and is pumped around the body. The left side of the heart has much further to pump the blood and is therefore larger and more muscular.Right Atrium, Left Atrium, Right Ventricle, Left VentricleRight Atrium, Left Atrium, Right Ventricle, Left VentricleThe heart has four chambers. The two ventricles (right and left) are muscular chambers that propel the blood out of the heart (the right ventricle to the lungs, and the left ventricle to all other organs). The two atria (right and left) hold the blood returning to the heart, and at just the right moment empty into the right and left ventricles.
How much is the pressure in right atrium?
The pressure in the right atrium typically ranges from 0 to 8 mmHg. During diastole, it is generally around 3 to 5 mmHg, while it can rise temporarily during atrial contraction. This low pressure is essential for the proper flow of blood from the body into the right atrium and subsequently into the right ventricle.
