A tooth-like structures surrounding the radial canal within a tube foot. [ http://purl.obolibrary.org/obo/BTO_0002124 ]
This is just here as a test because I lose it
Term information
function notes
The constant contraction of ampulla (to extend and retract the tube feet) helps to move a starfish
never in taxon
http://purl.obolibrary.org/obo/NCBITaxon_7618
http://purl.obolibrary.org/obo/NCBITaxon_35069
Term relations
Subclass of:
- organ
- in taxon some (not NCBITaxon_35069)
- part of some tube foot
- part of some water vascular system
- in taxon some Echinodermata
- in taxon some (not NCBITaxon_7618)