The heart appears to be divided in half with two separate sections for receiving and pumping blood from where does each half receive blood to where does each half pump blood?

Answer 1

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 answer

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.

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 .

Answer 2

the right atria receives oxygen depleted blood that the body has removed nutrients delivered from the veins and sends this waste blood through the tricuspid valve to the right ventricle where it exits the ventricle through a semilunar valve (pulmonary valve) through the lungs where it is reoxygenated. It is then sent to the left atria where it passes through the mitral valve to the left ventricle. It then is delivered to the body in its reoxygenated state from the left ventricle through the semilunar valve (aortic valve) to the aorta. The right side of the heart receives waste blood from the body......the left side of the heart receives reoxygenated blood and delivers it to the body.

Answer 3

The separation of the human heart into left and right halves prevents the mixing of oxygenated and deoxygenated blood. This separation increases the efficiency of the heart in delivering oxygen to body tissues.

Answer 4

THe SePTa. --TaShea.. 4rm G.R Mi.