There are three basic kinds of circulation in the body. They are complete circuits. One is the main circulation or the systemic circulation that takes blood to all parts of the body, even to lung tissue. It starts from the left atrium and ends in the right atrium. The second one is the pulmonary circulation that excludes the body.
it involves only the lungs where the blood is oxygenated. Another circulation is the portal circulation. This takes blood from the pancreas, spleen, stomach and intestines and takes it to the liver which then opens into the inferior vena cava and back to the heart.
The first type of circulation is the Pulmonary Circulation. This involves removing the oxygen-depleted blood cells from the heart going the lungs so that they would receive proper oxygen. The second type of circulation is the Systematic Circulation. This brings the blood cells with oxygen to be distributed to different parts of the body before going back to the heart.
The third type is the coronary circulation. It allows blood to be placed inside the heart. The last type of circulation is the one that happens in the heart itself. The heart is responsible for pumping blood to various parts of the body. These four types of circulation are very important to the human body.
1. The systemic circulation: Ittakes oxygenated blood from the left ventricle through the aorta to all parts of the body, including some lung tissue (not to air sacs) and returns the deoxygenated blood to the right atrium.
2. Pulmonary circulation: It collects blood from the veins of the pancreas, spleen, stomach, intestines, and gallbladder and directs it into the hepatic portal vein of the liver before it returns to the heart.
3. Portal circulation: It takes deoxygenated blood from the right ventricle to the air sacs of the lungs and returns oxygenated blood from the lungs to the left atrium.