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Word Count: 504
When a diver dives deep for a period of time breathing regular compressed air a certain amount on nitrogen will be dissolved in the blood If the diver comes back up to the reduced pressure of the surface too quickly small bubbles of nitrogen will form in the blood stream This is called the bends and requires the person to spend some time in a decompression chamber to gradually reduce the pressure and allow the nitrogen to escape the body Some animals goes down much deeper then we do so how come they dont get the bends are die from the pressure Like some seals and whales that could go 10 times deeper then us and comes back to the surface 10 times faster How come they dont suffer from this Researchers had found that deep diving animals rely far less on air stored in their lungs and far more on oxygen stored in their muscles Their muscles tend to hold unusually high concentrations of myoglobin A myoglobin is a protein that picks up life-giving oxygen from the blood and stores it for later use in providing usable energy for muscles by oxidizing sugars Humans on the other hand rely on only their lungs and the compressed air in their tank for diving The myoglobin in the humans carries much less oxygen Matter of fact we store very few of our oxygen in the myoglobin we store the oxygen in the lungs and use the oxygen for the myoglobin when we need to use it When the seal ascend the lungs collapse rapidly keeping large amounts of nitrogen from entering the blood The collapse of the lungs halts the flow of all atmospheric gases form the lungs into the bloodstream They also prevent the flow of oxygen into the blood When this animal does deep dives the muscles are working much harder than any other organ It will carry their own supply of oxygen
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