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Home > All Images > 2001 > September > 4 Sep 2001

Images Dated 4th September 2001

Choose from 13 pictures in our Images Dated 4th September 2001 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Human kidneys Featured 4 Sep 2001 Image

Human kidneys

Human kidneys. Computer artwork of two sectioned human kidneys. Humans possess two kidneys, located at the back of the abdomen, responsible for excreting nitrogenous waste from the blood. Each kidney is composed of an outer cortex (thin dark blue outer layer) and an inner medulla (orange, green and light blue). Each receives blood through the renal artery (short dark blue tubes, centre left and right). Nephrons (not seen) in the cortex and medulla filter unwanted substances from the blood, forming urine. The urine is then transported along the ureters (long blue tubes) to the bladder, from where it is expelled from the body