PMID: 1201609Dec 10, 1975Paper

Scanning electron microscope observations on the muscle innervation of Oikopleura dioica Fol (Appendicularia, Tunicata) with notes on the arrangement of connective tissue fibres

Cell and Tissue Research
P R Flood

Abstract

Critical point dried and fractured appendicularia of the species Oikopleura dioica have been examined in the scanning electron microscope. The dorsal nerve cord with ganglion cells and peripheral nerve fibres could easily be observed. Thick peripheral nerve fibres leave the nerve cord as bilateral pairs at constant intervals along the tail. Most of these fibres branch from the naked nerve cord, but some evidently originate in ganglion perikarya bulging out from the nerve cord itself. These paired peripheral nerves always have elaborate end-arborizations on the medial surface of the lateral muscle cells. They are accordingly interpreted as motor axons. Some thinner peripheral nerve fibres originate at irregular intervals from both the nerve cord and the ganglion cells. Due to the numerous extracellular fibrils that connect the bilateral layers of the epidermal fins and the muscle cells to each other, these thin nerve fibres can seldom be traced to their termination. A few ones can, however, be traced ventrally between the notochord and the muscle cells and seem to end in singular bulb-like expansions. Clusters of synaptic vesicles are present in transmission electron micrographs of such nerves, and they are accordingly believed ...Continue Reading

Citations

Jun 17, 2008·Development, Growth & Differentiation·Hiroki Nishida
May 26, 2015·Journal of Structural Biology·Wanderley de Souza, Marcia Attias
Nov 12, 2016·Cell and Tissue Research·Takeshi A OnumaHiroki Nishida
May 16, 2014·Folia Parasitologica·Renata M de MunoHelene S Barbosa
Jun 17, 2015·Antimicrobial Agents and Chemotherapy·Loyze Paola O de LimaHelene S Barbosa
May 12, 2007·The Journal of Comparative Neurology·Anne Mette SøviknesJoel C Glover
Apr 28, 2018·Experimental Parasitology·Wanderley de Souza, Marcia Attias

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