the oxygenated blood reaches the left atrium from the lungs. the contraction of the atria (atrial systole) increases the pressure in the atria such that it exceeds the ventricular pressure. the atioventricular valves then open. as we know liquid always moves from a region of high pressure to a region of low pressur. similarly in the heart blood will flow from the left atrium to the left ventricle.it will then be pumped into the systemic circulation.
Oxygenated blood
From the right ventricle to the lungs.
Blood returning from systemic circulation enters the heart at the right atrium. Blood from the pulmonary circulation enters the left atrium.
The left part of the heart is responsible for pumping through the systemic circulation. This circuit takes blood to the body tissues.
the left side of the heart pumps blood into the pulmonary
Blood enters the heart from the systemic circulation in the right atrium, and then moves to the right ventricle. From there, blood is pumped into the pulmonary circulation. When the blood returns from the lungs, it enters the left atrium, then left ventricle, then is pumped to body tissues via the systemic circulation.
It is called the pulmonary circulation, where blood travels to the lungs to receive oxygen and lose carbon dioxide, before returning to the heart.
The left side of the heart is associated with circulation of pure oxygenated blood to the body tissues
Systemic circulation is the flow of blood from the left side of the heart, through the tissues of the body excepting pulmonary tissues, and emptying into the right atrium of the heart. Pulmonary circulation is the flow of blood from the right side of the heart through the lungs to become freshly oxygenated and empties into the left atrium.
systematic
In pulmonary circulation, blood flows through the lungs and the heart. The other forms of circulation are coronary and systemic.
In the pulmonary circulation, deoxygenated blood leaves the right section of the heart through the pulmonary artery, enters the lungs and oxygenated blood comes through the pulmonary veins. The blood then moves to the left atrium of the heart.
As long as it is being pumped, blood will circulate - unless obstructed in the arteries and veins. This means stopping blood circulation requires stopping the heart (such as happens when you die or otherwise go into cardiac arrest) or introducing a major clot to block the blood flow. Circulation also can stop if the heart goes into fibrillation - rapid, irregular, and unsynchronized contraction of the heart muscle fibers. The heart just kind of quivers instead of pumping blood. Probably blood circulation would also stop if you bled so much that there was no blood left to circulate - but at that point the heart would probably stop pumping to so it still goes back to stopping the heart.
Blood flow to the brain is collected from the systemic blood circulation. Blood is pumped through the systemic circulatory system by the left side of the heart, specifically the left ventricle.