For other uses, see Kidney (disambiguation). The kidneys are two bean-shaped organs found on the left and right sides of the body in vertebrates. They filter the blood in order to make urine, to release and retain water, and to remove waste (The excretory system). They also control the ion concentrations and acid-base balance of the blood. Each kidney feeds urine into the bladder by means of a tube known as the ureter.
The shirt was worn under the Justaucorps in the 18th century. A dress shirt, button shirt, button-front, button-front shirt, or button-up shirt is a garment with a collar and a full-length opening at the front, which is fastened using buttons or shirt studs. A button-down or button-down shirt is a dress shirt which has a button-down collar â a collar having the ends fastened to the shirt with buttons.
A shirt is a cloth garment for the upper body. Originally an undergarment worn exclusively by men and women it has become, in American English, a catch-all term for a broad variety of upper-body garments and undergarments.