download_file.pptx - What are the two chemical senses taste(gustation Smell(olfaction On the top and sides of your tongue are 200 or more taste buds

download_file.pptx - What are the two chemical senses...

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What are the two chemical senses? taste (gustation) On the top and sides of your tongue are 200 or more taste buds, each containing a pore that catches food chemicals. Smell (olfaction) We smell something when molecules of a substance carried in the air reach a tiny cluster of receptor cells at the top of each nasal cavity.
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What are the five basic tastes we can detect? Tastes exist for more than our pleasure.
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How do we actually taste food? In each taste bud pore, 50 to 100 taste receptor cells project antenna-like hairs that sense food molecules. This is where the chemicals in food are transduced to neural messages for the brain. Some receptors respond mostly to sweet-tasting molecules, others to salty-, sour-, umami-, or bitter- tasting ones. Each receptor transmits its message to a matching partner cell in your brain’s temporal lobes.
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Taste and Age Babies are naturally attracted to salty and sweet tastes mother's milk which happens to be sweet and salty Also have natural dislikes (sour and bitter tastes) protect themselves from substances that may be poisonous
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Experiment 1. Take the paper towel provided and dry off your tongue 2. Now without looking place the skittle on your tongue 3. What flavor is the skittle?
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Identifying Taste Food must dissolve in water in order to be tasted! Some kind of liquid must be available to bind solid food to the appropriate taste receptor
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How does our sense of smell operate? These 20 million olfactory receptors respond selectively—to the aroma of a cake baking, to a wisp of smoke, to a friend’s fragrance. This is where odors are transduced to neural messages for the brain.
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