RT Book, Section
A1 Panus, Peter C.
A1 Jobst, Erin E.
A1 Masters, Susan B.
A1 Katzung, Bertram
A1 Tinsley, Suzanne L.
A1 Trevor, Anthony J.
SR Print(0)
ID 6093102
T1 Chapter 22. Growth, Thyroid, and Gonadal Pharmacology
T2 Pharmacology for the Physical Therapist
YR 2009
FD 2009
PB The McGraw-Hill Companies
PP New York, NY
SN 978-0-07-146043-9
LK accessphysiotherapy.mhmedical.com/content.aspx?aid=6093102
RD 2023/02/01
AB The  endocrine  system  integrates  major  organ  systems  with  each  other  and  with  the  nervous  system.  The  endogenous  ligands  that  the  endocrine  system  uses  to  perform  this  integrative  task  are  called  hormones.  Hormones  are  released  from  specialized  cells,  circulate  in  the  blood,  and  regulate  physiologic  processes  in  one  or  more  target  organs.  In  many  endocrine  systems,  several  hormones  act  in  series  to  regulate  organ  function.  The  release  of  one  hormone  in  the  series  regulates  the  release  of  the  next  hormone.  A  series  of  this  type  provides  multiple  levels  of  regulation  and  integration  and  also  provides  the  opportunity  for  negative  feedback,  in  which  the  last  hormone  in  the  series  can  reduce  the  production  of  earlier  hormones  in  the  series  and  thereby  regulate  its  own  production  (Figure  22–1).  The  endocrine  system  provides  many  useful  therapeutic  targets  and  many  drugs  either  mimic  or  block  the  effects  of  naturally  occurring  hormones.