Page 199 - The Miracle of Electricity in the Body
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                                 SMELL
                                             TOUCH




                                    SLEEP
  SIGHT                 HEARING                            MOVEMENT







    BALANCE


                                                                 SPEECH



                                                       TASTE


















                 In order for us to lead healthy lives, billions of connections have to have been
                 established in our brains, without the slightest defect. Any interruption or er-
                 ror in these connections may lead to various diseases or handicaps. In order
                 for this design to come about in the human embryo, formed by the division
                 and multiplication of a single cell, each cell must be in the right place. The
                 right connections must be established between them, and they must all be
                 kept in a structure that will preserve them. None of these stages takes place
                 without conscious direction and planning.
                 Finally, since a network of neurons that will constitute the brain is also re-
                 quired, each cell acquires a different structure according to its function. In or-
                 der for this network to be interconnected, it needs a system that can perform
                 many tasks at the same time.
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