Labels:daily | web site OCR: CORTEX HE CORTEX is one of three distinct sections that make up each kidney It is also called the renal cortex renal" means kidney) The cortex Is the darker- coloured, outer part of each kidney It has grainy texture because it contains small blood vessels Blood travels into the kidneys in large blood vessels called renal arteries. In the cortex these arteries split up into many smaller vessels or capillaries, which lead to a knot" tightly coiled capillaries. It is from this knot that the waste materials that make urine are filtered from the blood conta
