Pulmonary hypertension, which is a serious illness and can lead to heart failure.
You have lesser circulation or the pulmonary circulation. Blood goes to lungs in this system from the right side of heart. You have greater circulation or the systemic circulation. Blood goes to all over the rest of body through this circulation. The amount of blood that flows is same in both the systems. You have about 25/15 mm of Hg pressure in pulmonary circulation. You have about 120/80 mm of Hg pressure in systemic circulation.
Pulmonary circulation Pulmonary circulation pulmonary circulation pulmonary circulation
Pulmonary circulation is the movement of blood from the heart, to the lungs, and back.
Right side of the heart is involved in pulmonary circulation. This circulation is called, at times, as lesser circulation, as against the greater or systemic circulation. Blood that flows through the lesser and greater circulation is same in amount. But there is gross difference between the two. You have interstitial compartment in the systemic circulation. This is maintained through high blood pressure there. You do not have the same in pulmonary circulation. What you need here is simple blood flow, with out formation of the interstitial compartment. For that you have blood systolic blood pressure of about 25 mm of mercury. The blood pressure in the capillaries is about 15 mm of the mercury. The oncotic pressure of the blood proteins is about 22 mm of mercury. So very little fluid is leaked out to keep the alveoli wet. Some times in diseased condition more fluid is leaked out in the alveoli, to give rise to pulmonary oedema.
After the pulmonary circulation is complete, the blood goes back to the heart.
The blood circulation in the Lungs, called the pulmonary circulation, is COMPLETELY a part of the general, systemic circulation of Blood.
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.
after it is done with the pulmonary circulation it goes directly to the lungs
The pulmonary circulation takes blood from the heart to the lungs and back again. Blood moves from the right ventricle to the pulmonary artery, then into the lungs where blood is oxygenated. Blood returns from the lungs to the heart in the pulmonary vein, and enters the left atrium.
Your right side of the heart pumps blood in the pulmonary circulation. The pulmonary circulation should start from the origin of the pulmonary aorta.
Pulmonary and systemic
Pulmonary - carries oxygen-depleted blood away from the heart, to the lungs, and returns oxygenated blood back to the heart. Systemic - carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.