Assertion: vertebrate's system | /r/HasProperty | muscular
Facets:
Source sentences:
text: The vertebrates are also characterized by a muscular system consisting primarily of bilaterally paired masses and a central nervous system partly enclosed within the backbone .
text: They also have a highly efficient respiratory system, a muscular pharynx with slits and gills (in terrestrial vertebrates the slits and gills are greatly modified), a muscularized gut, and a chambered heart.