My best guy friend is in the hospital.. Okay so my best friend in the whole world is in the hospital, he's been in there for a while now.. and I'm going to visit him tomorrow. I want to bring him a present..like a get well soon card, and then just a random present.y best guy friend is in the hospital.. Okay so my best friend in the whole world is in the hospital, he's been in there for a while now.. and I'm going to visit him tomorrow. I want to bring him a present..
Quick Answer. Oxygen travels through the human body by being bonded to the iron in a special molecule in blood cells called hemoglobin. This is necessary because, unlike carbon dioxide, oxygen dissolves very poorly in water.
Oxygen is picked up by the blood cells in the lungs and returns back to the heart through the pulmonary vein into the left atrium. This is the second time it enters into the heart. From the left atrium it flows into the left ventricle and then exits into the aorta to the oxygenate the rest of the body. ANSWER:It actually goes through more than that, but I believe you are asking why it goes to the heart twice before it gets sent to the rest of the body.