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Class  20
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 URINARY  SYSTE  I  
PRE-­CLASS  WORK,  TERM  LIST  AND  LEARNING  OBJECTIVES  
 
This  is  a  term  and  concept  list  I  have  generated  to  help  guide  your  studying
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I
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  Describe  the  gross  anatomy,  microanatomy  and  vascularization  of  the  kidney
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  Pre-­class  work:    
1
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 However,  watching  
these  APR  videos  before  class  would  be  very  helpful:    “Urinary  system  overview”,  
“kidney  gross  anatomy”,  “kidney-­microscopic  anatomy”
...
 
APR:    
-­   kidneys,  ureters,  urinary  bladder  (all  retroperitoneal-­  the  posterior  side  of  the  
actual  organ  is  not  covered  by  the  serous  membrane  at  all,  directly  adheres  to  
the  abdominalpelvic  wall)    
-­   Adrenal  glands  
-­   Renal  arteries  (red)  and  Veins  (blue)  
-­   Kidney  up  close:    
o   Hilum:  where  blood  vessels  come  in  an  out  of  the  kidney  
o   Renal  veins  
o   Renal  arteries  
o   Renal  pelvis  (collecting  urine  made  within  the  kidney)  
o   Ureter-­  drains  the  urine  from  renal  pelvis    
Kidney  anatomy  (cross-­section):  
 

1  

Class  20
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Kidney  responsible  for  filtering  the  blood
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From  the  interlobular  arteries  you  branch  into  afferent  arteriole
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-­   Nephron  loop  (loop  of  henry)-­  stems  from  PCT  down  into  the  renal  medulla  
(makes  a  hairpin  turn  and  moves  back  up  into  the  cortical  tissue)    
o   Histology  of  the  renal  tube  changes  when  it  goes  down  to  the  renal  
medulla    
-­   Distal  convoluted  tubule  (DCT)-­  important  for  some  reabsorption,  but  MAJOR  
site  of  where  hormones  act  on  the  kidney  in  order  to  manipulate  how  diluted  your  
urine  is  going  to  be
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 Collects  urine,  multiple  collecting  ducts  join  
together
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 Pre-­class  work,  learning  objectives  and  term  list  

BIOL  117  

-­   Juxtamedullar  nephron  moves  all  the  way  down
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-­   Glomerular  Capsule:    
o   Parietal  (outer)  layer  
o   Visceral  (inner)  layer  –  modified  endothelial  cells  (blanket  voer  the  
glomerular  capillaries)    
o   Capsular  space  (where  theinitial  filtrate  goes)    
Glomerulus  has:  for  ease  of  filtration  
-­   Filtration  slits  
-­   Fenestrated  capilliaries    
 
Specialized  endothelial  cells-­  podocytes-­  make  up  visceral  layer-­  have  filtration  slits  in  
them  
Underneath  =  glomerulus  capillary  with  fenestrations
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 Pre-­class  work,  learning  objectives  and  term  list  
III

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