FIGURE 3 in Morphological revision of the genus Aiptasia and the family Aiptasiidae (Cnidaria, Actiniaria, Metridioidea)

FIGURE 3. Internal anatomy of Aiptasia couchii. A) Cross section of the column at the level of the actinopharynx showing the cycles of mesenteries (indicated by roman numberals between pairs). B) Detail of fourth cycle of mesenteries. C) Cross section through a tentacle showing the ectodermal longitudinal musculature. D) Cross section through distal column showing the strong ectodermal longitudinal musculature. E) Detail of a longitudinal section of the proximal end showing the basilar muscles (arrows). F) Longitudinal section of distal column showing mesogleal marginal sphincter muscle. Abbreviations: ep, epidermis: ga, gastrodermis; me, mesoglea. Scale bars: A–F, 0.1 mm.