Thursday 5 May 2016

PECULIARITIES OF RENAL VASCULAR SYSTEM


            Kidney is the one of the vital organ of the body, about 1250 ml blood flow through kidney per minute.



Each kidney receives blood from renal artery branch of descending Aorta
                                                                     ↓
Each kidney divides into anterior and posterior division (Anterior has 4 branches Apical; Upper & anterior; Middle & anterior; Lower)
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                                                                Each divided into segmental arteries
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                                                                Lobar artery (one on each pyramid)
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                                          Interlobar artery (just before entering the kidney substance)
                                                                                              ↓
                                           Arcuate artery (just the level of coeticomedullary junction)
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                                                                               Interlobular artery
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                                                                                Afferent arteriole
                                                                                              ↓
                                                                            Glomerular capillaries
                                                                                              ↓
                                                                                Efferent arterioles
                                                                                              ↓
                                                                              Peritubular capillary
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                                                                                 Interlobular vein
                                                                                              ↓
                                                                                      Arcute vein
                                                                                              ↓
                                                                                   Interlobar vein
                                                                                              ↓
                                                                                       Renal vein
                                                                                              ↓
                                                                                Inferior Venacava
                                                                                               
                                                                                               
                    Some peculiarities are
·         Branches of renal arteries are end arteries
·         Renal blood passes through two sets of capillary plexuses ( Glomerular plexus  &  Peritubular plexus )
·         Blood circulation of cortex 5 times more than medulla
·         Along the lateral border of the kidney is avascular because the anterior and posterior divisions do not anastomose across this line
·         Each kidney present five independent vascular systems such as Apical; Upper & anterior; Middle & anterior; Lower And the posterior )


Collected & Concise only for postgraduate student

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