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Summary The kidney and regulation of blood water potential revision notes
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Detailed and concise a level biology revision notes on the kidney and how blood water potential is regulated.
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FORMATION OF GLOMERULAR FILTRATEBlood enters the kidney Walls
of the glomerular capillaries are
through renal
artery made up of endothelial cells with pores
which branches into between them
arterioles then enters a
renal lBowman 's) capsule Diameter of afferent arteriole is
greater
than that of the efferent arteriole
This afferent
1
is the
arteriole which divides
to form glomerulus Build up of hydrostatic pressure
within
glomerulus
1
Glomerular capillaries
late merge to form
the efferent arteriole Water ,
mineral ions and glucose are forced out
which divides again of the capillary to form glomerular filtrate
into capillaries Blood cells and large proteins cannot pass across
the renal capsule too large
as
they are
These wind around nephron
.mn#-:--:: : :.: : :. .: t
tubulues then recombine Movement of filtrate resisted by :
forming the renal vein
-
capillary endothelial cells
To reduce resistance : blood capillaries
-
podocyte cells with spaces -
epithelial cells of the renal capsule
between -
hydrostatic pressure of fluid in renal capsule
-
spaces in endothelium -
low wake potential of glomerulus
between cells
÷
blood into the renal capsule
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