Page 234 - DK Children's Encyclopedia
P. 234

Smell                                                                             SEE ALSO

                                                                                               ▸ ▸ Brain  p.45
                                                                                               ▸ ▸ Hearing  p.127
           Smell is one of our senses. When tiny parts of something                            ▸ ▸ Human body
           float through the air and into our nose we identify a smell.                         p.130
           The brain tells us what it smells like compared to other                            ▸ ▸ Muscles  p.173

           things we’ve smelled before.                                                        ▸ ▸ Skeleton  p.228
                                                                                               ▸ ▸ Taste  p.249
                                                                     This area works out  what
                                                                     the smell is and sends
                                                                     information to the brain.
       How we smell                                 These cells are                                       The brain
       Anything that smells releases tiny           sensors that                                          tells us about
       particles into the air. The particles mix    detect smells.                                        the smell.
       with a sticky fluid in our nose called
       mucus. Sensors in the nose detect                                                    Mucus
       the smell and send signals to the brain                                              This sticky fluid mixes
       to identify it.                                                                      with the smell to help
                                                                                            the sensor cells
                                                                                            detect what it is.
                                Nose bone


            We can detect
              more than                                                           Nose cavity
            10,000                                                                This is the main airway for
                                     The smell enters the nose.
                                                                                  breathing. It is connected
            different smells                                                      to the throat and mouth.
            with our nose!















                                    The tongue
                                    has sensors
                                    for tasting
                                    food.




          Taste and smell
          Smell and taste are closely
          linked. If you hold your
          nose, you will find it
          harder to figure out what
          something tastes like.






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