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RS 5 Renal Blood Flow and its Regulation - Coggle Diagram

- - - - enter the tissue of the renal columns and run
        towards the surface of kidney.
        
        Reaching the level of the bases of the pyramids, the interlobar arteries divide into arcuate arteries.
      - Arcuate arteries
        
        run at right angles to the parent interlobar arteries.
        They lie parallel to the renal surface at the junction of pyramid and
        cortex. They give a series of interlobular arteries.
        
        Interlobular arteries
        
        run through the cortex at right angles to the renal
        surface to end in a subcapsular plexus.
        
        It has been held that interlobular arteries divide the renal cortex into small lobules.
        
        Each interlobular artery gives off a series of afferent arterioles.
        
        Afferent arterioles.
        
        Each afferent arteriole enters the Bowman’s capsule and divides into a rounded tuft of anastomosing capillaries called glomerulus.
        
        As mentioned earlier, this capillary network has special features owing to which it works as a sieve allowing plasma filtration with retention of plasma proteins and blood cells.
        
        The glomerular capillaries join to form the efferent arteriole.
        
        Efferent arterioles
        
        leaving the glomeruli of two types of nephrons
        exhibit different behaviour:
        
        Efferent arterioles arising from the cortical nephrons divide into peritubular capillaries
        that surround the proximal and distal convoluted tubule forming a rich meshwork of microvessels.
        
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        nephrons give rise
        to vasa recta.
        
        The vasa recta descend with the long loops of Henle into renal medulla and return to the area of the glomerulus, and drain into interlobular or arcuate vein.