What is the relationship between lung and systemic circulation?
lung and systemic circulation are two separate cardiovascular systems for blood -rich oxygen and lungs throughout the body. Blood, which is returned to the heart from the body through veins, has been exhausted by oxygen or deoxygenated and must re -receive oxygen in the lungs before it circulates back into the body. Lung circulation is a process that deoxygenated blood draws from the heart into the lungs, gets oxygen and is pumped back into the heart. Systemic circulation is a process that is pumped from the heart and distributed by arteries throughout the body, adds oxygen and other vital nutrients to the organs, muscles and other tissues that require it. Then he returns to the heart of the vein, where the process of lung and systemic circulation begins again.
The way of the blood during the lung circulation is called the lung circuit. It starts in the right atrium, the right chamber of the heart where the blood resistant to oxygen is stored superiorVena cava, a large vein entering the upper part of the heart. From there it is pumped to the right chamber, the chamber below, through a tricuspid valve and then from the heart through the Semilunar valve. Then he enters the pulmonary artery, a large blood vessel that transports blood up and out into the lungs. This is the only artery in the body that during the pulmonary and systemic circulation, it transports deoxygenated blood, the task usually performed by veins and towards, not from the heart.
When it reaches the lungs, the blood passes through a process known as breathing, by which the lungs pull carbon dioxide from the blood and replace it with oxygen from the air that has been inhaled. This newly oxygenated blood is then transferred back to the heart of the blood vessel kjako lung veins that enter the left side of the heart through the left atrium. Then the pulmonary circuit of the lung and systemic circulation system is terminated.
To start the system district, blood rich in oxygen from the left atrium is pumped under the left ventricle where it leaves the heart through the aorta. After browsing through the Semilunar valve and enteringBy means of aorta, the largest blood vessels of the body, the ascending aorta towards the aortic arch is transported, followed by branching of blood vessels that give the head, neck and arms. Much of this blood is diverted down by a descending aort, where it adds all the body structures down from the chest. As soon as this blood adds its oxygen to the tissues they need it, the veins are returned to the heart, where the vena cava is placed in the right atrium. Thus, the cycle of pulmonary and systemic circulation begins again.