ABSTRACT
The musculature of the tube foot is dually innervated in a rather unusual manner. Modified muscle processes termed muscle tails pass from the musculature into the perradial pore of the pore pair. Motorneurones within the nerve passing through the perradial pore form synaptoid contacts against the connective tissue adjacent to muscle cells. Neurone somata occur within this region of the tube foot nerve indicating the presence of a tube foot ganglion. The connective tissue and musculature of the tube foot is peripherally innervated by a novel type of neurone termed the LDSG cell.
