to remove salts in the blood
The urethra is a structure inside the body that expels urine from the bladder. Its function is to conduct the urine from the bladder for elimination.
urine
urine
It's function is to store and release urine
Bladder
Urine.
it's where urine is discharged
it measures the specific gravity of urine
To filter the blood
Transportation of urine and absorption of water
to hold it's urine.
The Ureter(s) [there are two of them] carry urine from the kidneys to the bladder.