Assertion: amnion | /r/CapableOf | serve as reservoir
Facets:
value: during later development
type: TEMPORAL
value: for urine
type: PURPOSE
Source sentences:
text: During later development, the amnion serves as a reservoir for urine, which is mixed with fluid that derives from maternal serum; this mixture cushions the developing fetus and provides a buoyant environment that allows for symmetrical growth and prevents embryonic adherence and growth onto the placental tissues.