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Figure 4 | Frontiers in Zoology

Figure 4

From: Comparative myoanatomy of Echinoderes (Kinorhyncha): a comprehensive investigation by CLSM and 3D reconstruction

Figure 4

Musculature of the anterior regions in three species of Echinoderes. Confocal z-stack projections of phalloidin labeling. Three sets of images (A-C; D-F; G-I) each show a species-specific series of consecutively deeper z-stacks toward the pharynx. Anterior is to the top in all images. (A-C) Echinoderes horni, head retracted. (D-F) Echinoderes hispanicus, head partially extended. (G-I) Echinoderes spinifurca, head fully extended. Abbreviations: dm, dorsal muscle; dim, diagonal muscle; dvm, dorsoventral muscle; icm, introvert circular muscle; icmr, introvert circular muscle retractor; idr, introvert distal retractor; ipr, introvert proximal retractor; lcf, longitudinal continuous fiber; mce, mouth cone external circular muscle; mci, mouth cone internal circular muscle; ncm, neck circular muscle; osm, outer oral style muscle; pb, pharynx bulb; pcm, pharynx circular muscle fibers; pop, pharynx outer protractor; pms, pharynx muscular sheath; pop, pharynx outer protractor; pram, pharynx radial muscle fibers; prm, pharynx retractor muscle; vm, ventral muscle. Scale bar, 20 μm.

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