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.
Small blood vessels called capillaries surround the alveoli. Oxygen passes through the thin walls of the alveoli and into the blood in the capillaries. A protein in the red blood cells called hemoglobin helps to transport the oxygen. At the same time, carbon dioxide passes from the blood into the alveoli. When air is breathed out, or exhaled, the air contained in the alveoli, which is rich in carbon dioxide, is forced out of the lungs and exits the body through the nose and mouth.