Assertion: amnion | /r/CapableOf | form fluid-filled sac
Facets:
value: around the embryo
type: LOCATION
value: in birds
type: LOCATION
Source sentences:
text: It fuses with other membranes with time and forms a fluid-filled sac in which the fetus develops safely.
text: Just like in birds, the amnion of mammals forms a fluid-filled sac around the embryo and serves as a shock absorber.
text: Just like in birds, the amnion of mammals forms a fluid-filled sac around the embryo and serves as a shock absorber.