It is dome shaped structure. diaphragm helps in movement of air in and out of the lungs. if it contracts air moves into lungs due to pressure difference. when it relaxes air move out of lungs . so in absence of diaphragm lungs will damage
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If diaphragm is not present in our body there wint be any high/low pressure whih is createf in or outside the lungs.and then the lungs wont function /work properly and the air we breathe doesn't rush into our body in a proper way and that leads to the stopping of breathing and respiration and if these two processes doesn't work out then we cant breathe and at last we will die bcoz of this so we need diaphragm in our body. Hope this helps.pls mrk as brainliest....
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