Hello, I am an Allied Health BS student at a local university. I have completed all of my anatomy and physiology courses and have a question that is related to heat stroke. I am now taking a Red Cross CPR course, for the 1 credit hour

, but my instructor was briefly talking about heat injuries and he had said, I believe, that as your muscles begin to cramp up you should mostly be worried about your diaphragm cramping up. This was unusual to me b/c I am also a medic in the Army National Guard and don't remember ANYTHING about the diaphragm in heat related injuries! I know that with dehydration and lack of potassium, over heating can be taxing on your heart. I just am confused as to what exactly the diaphragm has to do with it. I know that during a heat stroke it is common for one to faint and become unconscious, which I thought was mostly related to the over heating of the body but how does this connect with spasms of the diaphragm?