Assertion: brittle star's arm | /r/CapableOf | join circumoral nerve ring
Facets:
value: at the disc
type: LOCATION
Source sentences:
text: They lack a central nervous system but instead possess a rather simple distributed nervous system consisting of radial nerves along the arms, which join a circumoral nerve ring at the disc (Figure 1) (Cobb and Stubbs, 1981).
text: First, a brittle star lacks a central nervous system but instead possesses a rather simple distributed nervous system consisting of radial nerves along its arms, which join a circumoral nerve ring (figure 1b; electronic supplementary material, video S1, 1 : 13–1 : 31) .