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Fig. 11 | BMC Evolutionary Biology

Fig. 11

From: The first data on the innervation of the lophophore in the rhynchonelliform brachiopod Hemithiris psittacea: what is the ground pattern of the lophophore in lophophorates?

Fig. 11

Innervation of tentacles of Hemithiris psittacea. Z-projections after immunostaining against alpha acetylated-tubulin – grey (a, c-d), against alpha acetylated-tubulin and with phalloidin – blue (b); thin cross section (e-h) and longitudinal section (i) of tentacles. a Optical cross section of outer tentacle at its base. b Optical cross section of outer tentacle near its tip. c Optical cross section of inner tentacle at its base. d Optical cross section of inner tentacle near its tip. e The abfrontal tentacular nerve consists of two neurite bundles (violet), which are associated with the sensory cell (pink). f Numerous neurites of the frontal tentacular nerve. g Lateroabfrontal nerve of outer tentacle consists of neurites of different diameter with synaptic vesicles of different types. h Laterofrontal tentacular nerve. i Laterofrontal tentacular nerve consists of neurites with electron-lucent cytoplasm that contains thick microtubules (arrowheads). Abbreviations: afn – abfrontal tentacular nerve; ecm – extracellular matrix; gc – glandular cell; fn – frontal tentacular nerve; lafn – lateroabfrontal tentacular nerve; lfn – laterofrontal tentacular nerve; mi – microvilli; mc – muscle cell; n – nucleus; nf – nerve fiber; pn – peritoneal neurite; sv – synaptic vesicle

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