Thursday, April 1, 2010

vomitting

There is a place in brain called vomiting center.
Why an organism would like to kick out ingested food?
Because the food may contain poison, pathogen etc.

There may be several signals which tells the brain that the food contain harmful material, then the brain send a signal to vomit.

spinning also induce vomiting. Why?
May be there are some harmful thing which cause the brain to feel spining , that's why spinning feeling is interpretted as harmful thing inside the stomach (I just speculate).

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