ISS - Eating and Drinking

http://indianapublicmedia.org/amomentofscience/files/2010/03/astronautfood.jpg

 

The astronauts above are getting ready to eat something. They actually eat and drink often, as they need to for survival. Obviously this seems normal at first, but one really has to wonder, how is this done in a zero gravity environment? Food, water, and every other substance floats, until force is applied.

The packaged answer: muscles constrict the food, pushing it down to the stomach.

 https://i.stack.imgur.com/qkUBF.gif

This process must be awfully slow. What are the chances a given bite of food will actually make it to the stomach? Now imagine a drink of water. The risk of water not stopping in the throat, back of the mouth, or at a lung opening would be very high.

Last, but not least, we consider the laws of motion. A body in motion, stays in motion, unless acted upon with an equal, or opposite force.

If anyone sneezed, burped, jolted, jarred, got bumped, raised upward, or got caught in any motion when the food started down their throat, they would be doomed to die. Food slowly passing down the chest cavity would start back up again, and a simple bump as strong as the force at which the spasms were working the food down, would nullify the muscle spasm starting it, and the food, into a reverse motion.

I am alleging that eating in space is impossible.