Illustrated Glossary of Sea Anemone Anatomy - Mesenteries

This page contains images of sea anemone mesenteries taken in cross section. Mesenteries are infoldings of the endoderm and mesoglea extending from the body-wall into the gastrovascular cavity, some of which reach the actinopharynx and divide the gastrovascular cavity. In these images it is possible to see structures such as retractor muscles, parietal muscles, the column wall, and the actinopharynx.

Carcinactis ichikawai. Horizontal section through a level of stomodaeum to show directive mesenteries (DI), mesenteries of 2nd (II), 3rd (III) and 4th (IV) series.
Carcinactis ichikawai. Horizontal section through a level of stomodaeum to show characteristics of mesenteries of 3rd series which will be imperfect at slightly lower level.
Carcinactis ichikawai. Horizontal section of siphonoglyph at lower level.
Actinioides ambonensis. Cross section showing mesenteries of the first, second, and third order.
Milneedwardsia akkeshi. Transverse sections of mesenterial filaments. A, cut at the level of the ciliated tracts; B, below the level of the ciliated tracts.
Telmatactis australiensis. Transverse section of mesentery of first cycle at level of lower part of actinopharynx.
Telmatactis australiensis. Mesentery of second cycle.
Epiphellia anneae. Section of mesentery of the third cycle.
Photograph of a microscope slide of Anthosactis ingolfi prepared by Dr. Oskar Carlgren.

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