Assertion: exoskeleton | /r/CapableOf | serve as protective covering
Facets:
value: as a surface for muscle attachment
type: PURPOSE
value: over the body
type: LOCATION
Source sentences:
text: An insect's exoskeleton (integument) serves not only as a protective covering over the body, but also as a surface for muscle attachment, a water-tight barrier against desiccation, and a sensory interface with the environment.