2006-06-17 01:19:32 · 5 answers · asked by V-nath 1 in Science & Mathematics ➔ Medicine
bad smells stimulate the higher corticle centres of our brains to send signals via acetylcholine neurotransmitters to the vomiting centre in our medulla (brain stem). thus stimulating the stomach, abdominal muscles, and oesphagous to intitate the vomiting relfex via efferent pathways.
hahha.. just nerding.. i have an exam tmr on this. =p
2006-06-17 05:43:26 · answer #1 · answered by charlea 2 · 0⤊ 0⤋
Bad smells are often subliminally connected with things that are bad for us. For example rotten food smeels the way it does because of bacteria. By the time it begins to smell that way the level of toxins released by various bacteria would be dangerous, if not fatal, were we to eat the food. It's basicly a defense mechanism.
In a similar way if you once ate something that made you sick, you may later feel sick just looking at it or smelling it. The brain remmebers getting sick before. It reasons (the whole process is subconcious, of course) - if it made me sick once, it could do so again, and it makes you feel sick, to prevent you touching it. This is true even if originally you getting sick really had nothing to do with said food, but the two happend to coinside, your brain makes the conection all the same.
2006-06-17 09:05:51 · answer #2 · answered by evil_tiger_lily 3 · 0⤊ 0⤋
Body's reaction. It just happens, involuntary reflex.
2006-06-17 08:25:29 · answer #3 · answered by Stacy R 6 · 0⤊ 0⤋
VOMIT
2006-06-17 08:25:08 · answer #4 · answered by Anonymous · 0⤊ 0⤋
we have stomach problems
2006-06-17 09:17:33 · answer #5 · answered by Shelly B 1 · 0⤊ 0⤋