instruction: hi doctor I am trying to find out a specific function of the diaphragm when it comes to taking a deep breath there seems to be a deep breath one takes similar to when one is at the doctor and they say take a deep breath and then there is a much more satisfying deep breath one can take which seems to fill the upper lungs with much more air it looks like the diaphragm upper belly moves out a little bit when this deep breath happens can anyone explain the mechanics of this why can this deep breath happen sometimes and not other times it is as if I could hold a musical note for minutes because their is so much of in my lungs
output: hi it is an interesting question your observation that sometimes you can take a deep breath that is a bit more satisfying than other times makes me a bit more curious as to whether you are in the same posture every time you try it the diaphragm is a muscle that divides everything in chest from everything in the belly with a few orifices that help get certain things like your food pipe through it helps to expand the lungs by moving towards the belly while to take a breath in thereby creating more space for the lungs since there is a finite potential space I wonder if you feel the difference based on how much food you have had or what time of day is it I suggest a more detailed discussion if you can provide some more information