Note: I am not la looking for medical advice. Do not remove my post.
I had a terrible stomachache last night and ended up in hospital. I threw up once at home and I only puked the food I had eaten 20 min before. Later at the hospital I threw up what I had eaten for lunch. Why the first time I didn’t threw up a mix of both. How does the stomach selects what to throw up?
My wife always says that the body is wise and only expels what hurts you. Kinda right to think that way but how does it work.
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I like your wife’s answer, but:
It doesn’t really select what to throw up, but more, gets signals that maybe something bad has just entered your body from your digestive track. Best to eject.
This response is triggered by the brain, usually after being signaled by nerves connected to different things: Sensors for specific chemicals or other input from your guts (what you ate was not “safe”). Your balance system (issues with this can be a sign of ingested toxins, hence why messing with your vestibular system induces vomiting). Stress chemicals. And, stimulation of specific regions that might indicate a (potentially life-threatening) blockage, such as the back of your throat before it branches into your lungs.
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