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The classic essential text on anatomy...

Renal Medulla

Renal Microcirculation

V F Murphy< a> Saturday 31st May 2003

Introduction The renal medulla is the innermost part of the kidney itself. The renal medulla is split up into a number of sections, known as the renal pyramids. Blood enters into the kidney via the renal artery, which then splits up to form the arcuate arterioles. The arcuate arterioles each in turn brach into interlobar arterioles, which finally reach the glomeruli. At the glomerulus the blood reaches a highly disfavourable pressure gradient and a large exchange surface area, which forces a lo…

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