Smell and Taste

Smell and Taste - Salty Sour Sweet and Umami Umami is an...

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Gabriel Paulino 03/11/11 Lang. Arts Period 8 Smell and Taste Have you ever plugged your nose while eating a food you don’t like? Does it actually work? If not, your taste is messed up because believe it or not, according to scientists chemosensation, our chemical sensing system is how we “taste” food. It all starts when molecules released by the substances around us stimulate special nerve cells in the nose, mouth, or throat. Then, the cells transmit messages to the brain, where specific smells or tastes are identified by three specialized taste nerves. The two of the three nerves that differentiate smell and taste are the olfactory nerve (smell) and gustary (taste). When we put food into our mouth, odor molecules from our food push through a nasal passage and up to our olfactory receptor cells at the top of our nasal cavity. After this process is done, our taste buds separate the taste into five basic tastes: Bitter,
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Unformatted text preview: Salty, Sour, Sweet, and Umami. Umami is an unusual taste because it is only active with foods high in protein such as foods with monosodium glutamate or M.S.G. Our bodies’ posses about 10,000 taste buds, but as we get older we usually lose them because of this our sense of taste will get weaker. Elderly people are not the only ones to lose their taste. Each year over 200,000 “young” people lose their taste before age 50. According to recent research, these people might have lost the sense of taste due to medical conditions such as, common cold, tooth and gum diseases, allergies, ear infections, head injury, tongue infection, tonsil disorder, upper respiratory disorders, nasal and sinus problems, nasal polyps, Alzheimer’s disease, Parkinson’s disease, brain tumor, etc....
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This note was uploaded on 02/08/2012 for the course ECON 101 taught by Professor Gilbert during the Spring '11 term at Wisc Whitewater.

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Smell and Taste - Salty Sour Sweet and Umami Umami is an...

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