Assertion: urine's amount | /r/MadeOf | nitrogenous wastes
Facets:
Source sentences:
text: This small amount not needed by the body, containing nitrogenous wastes (byproducts of body metabolism) and any excess salts or sugars, travels down the tubules into cuplike chambers that merge and open into the funnel-shaped sac (renal pelvis) that drains urine into the ureter for passage into the bladder.