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medullamore about medulla

medulla


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Medulla  \Me*dul"la\,  n.  [L.] 
  1.  Marrow;  pith;  hence  essence.  [Obs.]  --Milton. 
 
  2.  (Anat.)  The  marrow  of  bones;  the  deep  or  inner  portion  of 
  an  organ  or  part  as  the  medulla,  or  medullary  substance, 
  of  the  kidney;  specifically,  the  medula  oblongata. 
 
  3.  (Bot.)  A  soft  tissue,  occupying  the  center  of  the  stem  or 
  branch  of  a  plant;  pith. 
 
  {Medulla  oblongata}.  [L.,  oblong  medulla]  (Anat.),  the 
  posterior  part  of  the  brain  connected  with  the  spinal 
  cord.  It  includes  all  the  hindbrain  except  the  cerebellum 
  and  pons,  and  from  it  a  large  part  of  the  cranial  nerves 
  arise.  It  controls  very  largely  respiration,  circulation, 
  swallowing,  and  other  functions,  and  is  the  most  vital 
  part  of  the  brain;  --  called  also  {bulb  of  the  spinal 
  cord}.  See  {Brain}. 
 
  From  WordNet  r  1.6  [wn]: 
 
  medulla 
  n  1:  a  white  fatty  substance  that  forms  a  medullary  sheath  around 
  the  axis  cylinder  of  some  nerve  fibers  [syn:  {myelin},  {myeline}] 
  2:  lower  or  hindmost  part  of  the  brain;  continuous  with  spinal 
  cord;  (`bulb'  is  an  old  term  for  medulla  oblongata);  "the 
  medulla  oblongata  is  the  most  vital  part  of  the  brain 
  because  it  contains  centers  controlling  breathing  and 
  heart  funtioning"  [syn:  {medulla  oblongata},  {bulb}] 
  3:  the  inner  part  of  an  organ  or  structure  in  plant  or  animal 
  [ant:  {cortex}] 
 
  From  U.S.  Gazetteer  (1990)  [gazetteer]: 
 
  Medulla,  FL  (CDP,  FIPS  43925) 
  Location:  27.95965  N,  81.98870  W 
  Population  (1990):  3977  (1617  housing  units) 
  Area:  14.7  sq  km  (land),  0.0  sq  km  (water) 




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