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Lecture 20 Urinary System 2010

Lecture 20 Urinary System 2010 - TheUrinary(Renal)System...

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The Urinary (Renal) System
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The Urinary (Renal) System Kidneys Ureters Bladder Urethra
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Functions of the Kidneys  Maintain wate r balanc e  by re m o ving  e xc e s s  fluid  fro m  the  bo dy, o r c o ns e rving  wate r.   Re m o ve  was te  pro duc ts  by filte ring  the  blo o d  (e .g .: ure a and c re atinine ) Maintain no rm al blo o d c he m is try   (pH, io nic  balanc e  e tc .) Pro duc e  ho rm o ne s   (e .g .: re nin he lps  re g ulate  the  blo o d pre s s ure and e rythro po e tin s tim ulate s  re d blo o d c e ll  pro duc tio n)
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Anatomy of the Kidney   paire d, be an-s hape d re ddis h-bro wn o rg an *Ho rs e , do g , c at, pig : s m o o th *O x, birds : lo bulate d     retroperitoneal ,  lo c ate d o uts ide  the   pe rito ne al c avity (jus t ve ntral to  the  firs t fe w  lum bar ve rte brae ) rig ht kidne y is  s lig htly m o re  c ranial than the   le ft
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Ventral views
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  RENAL C O RTEX  ~ the  o ute r part o f the  kidne y, c o ntains  the  re nal c o rpus c le s   and the  pro xim al/dis tal c o nvo lute d tubule s   RENAL MEDULLA  ~ the  tis s ue  s urro unding  the  re nal pe lvis , c o ntains  the   c o nne c ting  tubule s  and the  lo o ps  o f He nle . It is  m ade  up o f m any re nal 
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