<P> The renal medulla is the innermost part of the kidney . 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 interlobar arteries . The interlobar arteries each in turn branch into arcuate arteries , which in turn branch to form interlobular arteries , and these finally reach the glomeruli . At the glomerulus the blood reaches a highly disfavourable pressure gradient and a large exchange surface area , which forces the serum portion of the blood out of the vessel and into the renal tubules . Flow continues through the renal tubules , including the proximal tubule , the Loop of Henle , through the distal tubule and finally leaves the kidney by means of the collecting duct , leading to the renal pelvis , the dilated portion of the ureter . </P>
<P> The renal medulla is the innermost part of the kidney . 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 interlobar arteries . The interlobar arteries each in turn branch into arcuate arteries , which in turn branch to form interlobular arteries , and these finally reach the glomeruli . At the glomerulus the blood reaches a highly disfavourable pressure gradient and a large exchange surface area , which forces the serum portion of the blood out of the vessel and into the renal tubules . Flow continues through the renal tubules , including the proximal tubule , the Loop of Henle , through the distal tubule and finally leaves the kidney by means of the collecting duct , leading to the renal pelvis , the dilated portion of the ureter . </P>
where is the medulla located in the kidney
where is the medulla located in the kidney
the innermost part
the innermost part