Answer:
Kidneys:remove waste from the blood in the form of urine, keeps substances stable in the blood, and to make vitamin D active
The 2 ureters: these narrow tubes carry urine from the kidneys to the bladder
Bladder:the bladders’ walls relax and expand to store urine, and contract and flatten to empty urine through the urethra
The 2 sphincter muscles:they are circular muscles that keeps urine form leaking by closing tightly like a rubber band around the opening of the bladder
The nerves in the bladder: the nerves alert a person when it is time to urinate of empty the bladder
Urethra: this tube allows bladder to pass outside the body
Step-by-step explanation: