Directions B: Identify the parts based on the given functions of the of the kidney. 1. 2. 3. 4. This triangle-shaped, hollow organ is located in the lower belly. It is held place by ligaments that are attached to other organs and the pelvic bones These circular muscles help keep urine from leaking by closing tightly like rubber band around the opening of the bladder. This tube allows urine to pass outside the body These narrow tubes carry urine from the kidneys to the bladder​