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How does the pulmonary circulation work in your body?
Much like the systemic circulation, but at a lower pressure: Blood flows from the right ventricle through pulmonary artery to lungs where the gases are exchanged to pulmonary vein to left atria.
In function of the heart is to what blood to the lungs?
Well, the pulmonary trunk / pulmonary arteries bring deoxygenated blood to the lungs. From there it travels through pulmonary veins into the left atria. From the left atria it travels through the bicuspid valve into the left ventricle. When the left ventricle relaxes after a contraction, the blood passes through the aortic semilunar valve and into the aorta. From there it pretty much just goes to the rest of the body
Do the pulmonary veins carry as much blood before birth as they do after birth?
No.
Why the pulmonary veins carrying the oxygenated blood and not the pulmonary artery?
it's a pulmonary VEIN because the blood isn't under as much pressure (because it has yet to get to the heart) where as the pulmonary artery is coming straight from the heart so is under more pressure. (the pressure is caused by the heart's contractions)
What advantages are there in supplying pulmonary circulation with blood at low pressure than that of systemic circulation?
Because the pulmonary circuit only pumps blood to the lungs and back to oxygenate it before it is sent round the rest of the body. The Systemic circuit must pump the blood everywhere else in the body and therefore has a much larger distance to cover which is why it needs more force and pressure.
What is the difference between pulmonary artery and pulmonary vein?
The pulmonary artery carries blood from the heart to the lungs. The pulmonary vein carries blood to the heart from the lungs. Unlike all other veins and arteries in the body the pulmonary artery has de-oxygenated blood and the pulmonary vein has oxygenated blood.
Function of the blood flow through the heart?
HERE IS BLOOD FLOW STEP-BY- STEP THROUGH THE HUMAN HEART:Oxygen poor blood is collected from the Inferior and Superior Vena Cava. It is released into the Right Atrium where it moves through the Tricuspid Valve into the Right Ventricle. When the Right Ventricle contracts, blood is forced through the pulmonary valve into the pulmonary artery which splits into the Left and Right Pulmonary Veins. Blood is taken via the arteries to the lungs where the oxygen and carbon dioxide diffuse through the simple squamous tissue. Oxygen- Rich blood then returns to the heart via the Pulmonary Trunk which empty into the left atrium. Once the atrium contracts, the blood passes through the Bicuspid Valve into the Left Ventricle. Once the ventricle contracts blood is forced through the Aortic Valve and out of the Aorta to travel to the blood tissue.If you are looking at this, you are probably taking Biomed..... MY HEART GOES OUT TO YOU! IF I KNEW WHAT BIOMED WOULD BE LIKE< I WOULD HAVE NEVER TAKEN IT!
How much blood is in the pulmonary circulation?
A: 20 - 30% 54 - 60 % is in the veins 11 - 15% in the arteries only 5% in the capillaries and the remainder is in the pulmonary circulation & heart.
Give an example of how the pulmonary and circulatory systems are dependent on each other?
Pulmonary = lungs Circulatory = blood Without oxygen in the blood, there's not much point in having a circulatory system to pump it around, now, is there? And how can a circulatory system function if it has no energy because it has no oxygen? than you!
The veins that empty the blood from the lungs to the heart?
The pulmonary artery carries the blood from the right side of the heart to the lungs. The pulmonary vein then returns the oxygenated blood to the left side of the heart where it is pumped along the aorta->arteries->arterioles->capillary bed. It is then returned to the heart via venules->veins->inferior/superior vena cava.
What is systematic and pulmonary circulation?
Systematic circulation is the circulation of blood from the heart, to the body and then back to the heart again, while pulmonary circulation is the circulation of blood from the heart, to the lungs and then back to the heart.
What is the signifiance of the difference in thickness between the wall of the aorta and the wall of the pulmonary trunk?
Aorta is thicker because it has greater pressure of outflow to deal with from the left ventricle. Blood leaving the heart into the aorta has great pressure because the blood has to be carried all over the body, whereas the pulmonary trunk only pumps blood to the lungs which is an area of lower pressure.
