Figure 6 | Scientific Reports

Figure 6

From: Innervation of the lophophore suggests that the phoronid Phoronis ovalis is a link between phoronids and bryozoans

Figure 6

Innervation of tentacles in Phoronis ovalis. Semithin (A,C) and ultrathin (B,DH) transversal sections. (A) A shape of tentacles and location of main zones, (B) location of tentacular nerves in epithelium: abfrontal nerves are in blue, frontal nerve is in pink, laterofrontal nerves are in green, (C) row of tentacles with large cells between them, which form outer (straight arrowheads) and inner (double arrowheads) rows, (D) subperitoneal neurites, (E) outer and inner rows of inter-tentacular large cells, (F) ultrastructure of inner inter-tentacular cell, (G) abfrontal neurite bundles, (H) laterofrontal neurite bundle consists of 20 neurites of small diameter and one large neurite. Abbreviations: afn, abfrontal neurite bundle; az, abfrontal zone; ecm, extracellular matrix; fn, frontal neurite bundle; fz, frontal zone; iepi, inner epithelium of tentacles; iic, inner inter-tentacular cell; lfn, laterofrontal neurite bundle; lfz, laterofrontal zone; lgn, neurite of large diameter; mit, microtubules; ne, neurite; oepi, outer epithelium of tentacles; oic, outer inter-tentacular cell; smn, neurite of small diameter; spn, subperitoneal neurite; v, synaptic vesicle; tc, tentacular capillary.

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