The left half.
your right half of the heart collects the blood from the body and pumps it to the lungs to collect oxygen.
The deoxygenated blood goes into the lungs through pulmonary artery from the right ventricle. the oxygenated blood again enters the heart from the lungs by pulmonary veins to the left atrium.
Blood. The human heart is divided into two halves, which act as two pumps. The right half of the heart collects deoxygenated blood drained from all over the body, and pumps that deoxygenated blood into both lungs. The left half of the heart collects oxygenated blood drained from both lungs, and pumps that oxygenated blood to the rest of the body.
Blood travels to the lungs because it is not oxygenated and it will become oxygenated in the lungs, since that is what the lungs are for. The pulmonary artery takes blood to the lungs, and the pulmonary vein takes blood from the lungs back to the heart, from whence it is pumped throughout the body.
The heart delivers blood to itself, one half gets "fresh" blood, while the other half gets the blood that comes back after being circulated through the entire body.
The right and left ventricles of the heart contract, or pump blood, at the same time. The right ventricle pumps blood to the lungs, and the left ventricle pumps blood to the body.
The superior vena cava collects deoxygenated blood from the upper half of the body, and the inferior vena cava collects fromt the lower half of the body.
Freshly oxygenated blood from the lungs goes directly to the heart. From there, approximately 50% of the blood goes directly to the brain and head while the other half is distributed to the rest of the body.
The first set of blood that comes in to the first half of the heart (the right half) is blood coming from the rest of the body (such as muscles, brain, other organs etc.) This set of blood does NOT have oxygen as the body has already used it up. Such blood is said to be deoxygenated.Now, you don't want to pump this blood back round again because it does not have any oxygen in it so you want it to go to the LUNGS where it can become reinfused with oxygen.So the right half of the heart will pump that first set of blood to the lungs and then it will return to the second part of the heart (the left half) as oxygenated blood. You don't want it returning to the first half because then it will get mixed with the deoxygenated blood.Now this second half of the heart will pump the oxygenated blood to the rest of the body to meet the body's demand for oxygen. So one of the reasons it's in 2 halves is to separate the oxygenated blood from the deoxygenated blood so that the two types of blood don't mix.Now, you might be asking the question. Well, why doesn't the heart just pump the blood to the lungs AND to the body ALL IN ONE GO.Problem is pressure.The lungs are relatively weak structures. If you wanted your heart to pump in one go so that all the blood reaches the lungs AND then reaches all parts of your body AND return back to the heart, that would require a LOT of force. That amount of force will rupture your lungs.So what happens is that the blood that is pumped from the first half to the lungs, is pumped with a much lower force than the blood that is pumped from the second half. That protects your lungs from becoming damaged.new answerThe first set of blood that comes in to the first half of the heart (the right half) is blood coming from the rest of the body (such as muscles, brain, other organs etc.) This set of blood does NOT have oxygen as the body has already used it up. Such blood is said to be deoxygenated.Now, you don't want to pump this blood back round again because it does not have any oxygen in it so you want it to go to the LUNGS where it can become reinfused with oxygen.So the right half of the heart will pump that first set of blood to the lungs and then it will return to the second part of the heart (the left half) as oxygenated blood. You don't want it returning to the first half because then it will get mixed with the deoxygenated blood.Now this second half of the heart will pump the oxygenated blood to the rest of the body to meet the body's demand for oxygen. So one of the reasons it's in 2 halves is to separate the oxygenated blood from the deoxygenated blood so that the two types of blood don't mix.New Answer "As Said in the previous answer Which states that the deoxygenated blood moves into the right half of the heart whereas the oxygenated blood moves into the left half . now i will answer what happens if it the de oxygenated blood mixes with the oxygenated blood . The amount of energy released will be really less as there wont be much O2 , if only de oxygenated blood moves continously in our body no enery will be released thats why the lungs are present where the conversion of De Oxygenated blood gets converted into pure / oxygenated blood so i can produce energy and yes if both mix up the impurities will also lead to some problem . like urin when collected in the urinary bladder gets acidic when more and more impurities get collected , almost the same thing happens here also .
In the first stage, the deoxygenated blood must be pumped to the lungs to be oxygenated again. This is the first stage. From the lungs, the newly oxygenated blood must be pumped back to the body to be used again. This is the second stage. Without these stages, blood could not be properly oxygenated and the body could not function.
This question is misguided. Both sides of the heart contain blood. The difference is that the right side contains deoxygenated blood, which is sent to the lungs to pick up more oxygen. The oxygenated blood returns to the left side of the heart to be sent off round the body to supply all the organs and tissues. The first person to state that blood goes to the lungs, where it is changed by the air and then goes back to the heart was Michael Servetus (born 1509), though the idea was independently discovered by Realdo Columbus around 1559.
There are three: The Superior Vena Cava carries de-oxygenated blood from the upper half of the body to the heart. The Inferior Vena Cava carries de-oxygenated blood from the lower half of the body to the heart. The Coronary Artery carries oxygenated blood from the lungs to the heart.