5. Jack Bauer is a highly trained field agent for a special government organizat

Question

5. Jack Bauer is a highly trained field agent for a special government organization called the counter terrorism unit. To stop a terrorist attack, Jack must enter a building containing nerve gas at a concentration of 0.2 mg/L and unfortunately he forgot his gas mask. If the nerve gas becomes lethal when the alveolar concentration reaches 0.15 mg/L, how long can Jack spend in the building? You may assume that he breathes normally and that the following data for the average human at rest apply (even though it is obvious that Jack Bauer is much better than the average human): Tidal volume = Vr= 500 ml Dead space Vo 150 ml Average alveolar volumeV 3000 ml Breathing frequency V 15/min You can neglect mass transfer of nerve gas from the lungs to Jack's blood stream. You can also assume Vr is the same for exhaling and inhaling.

Explanation / Answer

In this case the person is highly trained field agent for counter terrosim unit , and he will be more efficient to combact this type of lethal effet more efficiently than a more man as he is trained in it and this show shows that he can stay in that building for few minutes( and this nerve gas first effects the nervous system which may leads to paralysis , leads to asphyxiation and death) and it may cause acute respiratory failure because the nerve gas onsets the acetylcholinesterase inactivated by this acetylcholine cannot be broken down so muscles are prevented from relaxing and they are effectively paralyzed so it may effect the muscles of breathing and leads to asphyxiation.

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