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When we smell tasty food our mouth waters.which part of the nervous system makes this happens?

hope it helps you..
Most of the saliva helps breakdown all the starch and other compounds to sugars. So whenever you see and smell some delicious food your brain which is really smart perceives you will eat it and hence asks the salivary glands to release the saliva in advance which we call mouth-watering.
There are 3 major salivary glands (submandibular, sublingual and parotid) and thousands of minor salivary glands throughout the mouth. All of these are stimulated by the autonomic nervous system. Stimulation by the nervous system causes saliva to be released into the mouth
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Thankyou.but it's not up to the mark...
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The nerves that control saliva production are part of a reflex system. They fire without you consciously thinking about it when you are eating.?The smells, tastes and even the movement of your jaw muscles can activate this reflex. The part of the brain responsible for this salivary reflex is the medulla oblongata which controls?a variety of functions from sneezing to vomiting. On recieving these stimuli, the medulla oblongata?sends neurotransmitters to the glands to produce the saliva.
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