kidney
I nvertebrates, the kidneys are two reddish-brown bean-shaped organs. They are positioned on the left and right sides of the retroperitoneal region and are around 12 centimetres (4+12 inches) long in adults. [1][2] They get blood from the linked renal arteries and get blood from the paired renal veins. Each kidney is connected to a ureter, which is a tube that transports expelled pee to the bladder. he kidney controls the concentrations of different body fluids, fluid osmolality, acid-base balance, and toxin removal. One-fifth of the blood volume entering the kidneys is filtered in the glomerulus, where it takes place. Solute-free water, salt, bicarbonate, glucose, and amino ac...