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TRUE OR FALSE?  261


                                                         FAST FACTS

                                     How is
                                    a human
                                   tongue like
                                  an elephant’s
                                     trunk?                   80%      OF THE
                                                                     FLAVOR
                                                                SENSATION
                                                         WE GET FROM FOOD COMES
                                                                  FROM ITS SMELL
                                                       The nose can detect more than one trillion
                                                       different odors, but when it is blocked
                                                       food becomes almost flavorless. Try eating
                                                       something while holding your nose shut. Food
                                                       will be almost tasteless.
                                                       WOMEN’S
                                                       SENSE


                                      Some foods leave a    OF SMELL
                                      bad taste in the mouth.   IS STRONGER
                                      Sour and bitter tastes   THAN MEN’S
                                      can just be intense
                                      flavors or a sign
                                      that food is unripe    Not only have women shown
                                      or even poisonous.  that they can smell better than
                                                       men; their sense of taste is
                                                       stronger too. Women are also
                                                       better at finding the words to describe
                                   Overly salty food    what they are smelling and tasting.
                                   on the tongue will
                                   activate the brain
                                   to quench the
                                   thirst with fluid.
                                                                 THE MOUTH HAS
                         It was first believed that the four   ONE MILLION
                        basic tastes—sweet, sour, salty,
                       and bitter—were detected by only    TASTE RECEPTOR CELLS
                      certain parts of the tongue. Now
                     we know that the whole tongue works to
                   respond to every taste entering the mouth.
                 One extra taste has now been recognized.   There are up to 100 of these specialized cells in
                                                       each of the taste buds. Tiny taste “hairs”
              This is umami, the savory, meaty taste in soy   attached to each receptor cell detect taste
              sauce, mushrooms, meat, and cheese.      molecules dissolved in saliva. Receptor cells
                                                       then send messages to the brain, which
                                                       identifies tastes in food.




   US_260_261_309600_Taste_and_smell.indd   261                           19/12/17   3:48 pm
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