H --  SUMMARY  -- ANSWERS
         
    38.  The various glands of the human  E N D O C R I N E  system have many
           characteristics in common.
            a.   Their secretions are known as  H O R M O N E S.
            b.   The secretion made from A M I N O   A C I D subunits are P R O T E I N S.
            c.   The secretions arrive at their targets through the B L O O D.
            d.   The secretions are  S L O W   to arrive at their target tissues.
            e.   The secretions once at their targets show a  L O N G  duration at the sites.
           

             
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