Page 67 - One Million Things: Animal Life - The Incredible Visual Guide
P. 67

Eye rolls backward      Pores mark openings
                                                             during feeding
                              Openings to                                         to organs that detect
                            ears located on                   for protection      electrical signals
                           top of head just
                           behind the eyes                         3

                                                                      4
                                                                                                                                Water passing
                                                                                                6
                                                                                                                                through
                                                                                                                                nostrils
                                                                                                                                carries odors
                                                                                                                                to smell
                                                                         7
                                                                                                                                receptors











                                                                    5
                                                                                                            Taste buds
                                                                                                            located in lining
                                                                                                            of mouth and gullet
















                                                                            6   SMELL                        7  ELECTRICAL SIGNALS
                                                                            As a shark swims, water flows into   When animals move, their muscles
                                                                            its nostrils and over highly sensitive   give off very weak electrical signals.
                                                                            smell receptors. Once the shark   Dotted around the shark’s snout
                                                                            picks up on an odor trail, it swims   are hundreds of pores leading to
                                                                            toward the source, moving its head   sensory organs that can detect those
            1                                                               from side to side to pinpoint the   electrical signals. Once a shark has
                                                                            exact location.                  seen, heard, or smelled its prey and
                                                                                                             is closing in, its electrical detectors
                                                                                                             take over, using the prey’s weak
                                                                                                             electrical signals to strike accurately.
          Skin contains
          touch, temperature,
          and pain receptors





















                                                                                                                                        65

                                                      (c) 2011 Dorling Kindersley, Inc. All Rights Reserved.


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   US_064_065_Senses.indd   65                                                                                                       12/1/09   12:40:16
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