A projecting ridge or fin on the bottom of the hull of a boat or ship that improves directional control and is often weighted for added stability. 2. The principal structural member of an aircraft, resembling a ship's keel in shape and function.
The outer, reddish region, next to the capsule, is the renal cortex. This surrounds a darker reddish-brown region called the renal medulla. The renal medulla consists of a series of renal pyramids, which appear striated because they contain straight tubular structures and blood vessels.
Quick Answer. The kidneys are located on either side of the posterior of the abdomen. The human body contains two kidneys, which have a bean-shaped structure. Each kidney is surrounded by a fibrous tissue called the renal capsule, which provides the kidney with protection from trauma and damage. Continue Reading.