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.
In aerobic respiration, oxygen is used within the cell to help create energy. When you breathe, air enters microscopic air sacs in your lungs called alveoli. Oxygen passes through the walls of the alveoli and into the bloodstream. The blood carries oxygen to cells throughout the body, where it helps convert nutrients into usable energy. Fun fact: oxygen is what makes your blood red. Blood without oxygen appears blue.