[katieHaylor (OP)]

Andie asks:

What would the effects of rapidly decreased air pressure be on the human body/environment?

What do you think?

[RD]

... What would the effects of rapidly decreased air pressure be on the human body ...

Probably the same effects as on a dogsbody ...

...  the dogs became unconscious after 10-20 seconds. They also experienced simultaneous urination, projectile vomiting, and defecation, the latter two caused by gas from their digestive tract being rapidly expelled.  Many of the dogs also experienced dramatic seizures.  Some of the dogs ended up with a thin layer of ice on their tongues as the moisture in their mouths evaporated, cooling the tongue rapidly.   Finally, the dogs’ bodies themselves swelled to nearly twice their normal size, so that they looked like “an inflated goatskin bag”.

http://www.todayifoundout.com/index.php/2012/06/you-can-survive-being-exposed-to-the-near-vacuum-of-space-for-about-90-seconds-with-no-longterm-damage/

[alancalverd]

Depends on the speed and final pressure. Below about 0.3 atmospheres the partial pressure of oxygen is insufficient to sustain life, and consciousness is gradually lost below 0.5 atm if you are not acclimatised. The time of useful consciousness is decreased by more rapid decompression.

As RD says, very rapid decompression to a hard vacuum leads to belching, farting, outgassing of blood and joint fluids, rapid loss of consciousness, voiding of liquids, bloating and death.

Wear your space suit.