Kidney

Kidneys (腎臓) are two bean-shaped organs found in vertebrates. They are located on the left and right sides of the body within the retroperitoneal space, and in adult humans are about 11 centimetres (4.3 in) in length. Kidneys receive blood from the paired renal arteries; blood exits into the paired renal veins. Each kidney is attached to a ureter, a tube that carries excreted urine to the bladder.

Appearance
A kidney looks like a huge shrine, just like the heart.