Mesogloea

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The mesogloea (Greek mesos - middle, ho gloios - sticky oil) is a gelatinous tissue that fills the space between the inner gastrodermis and the outer epidermis layer in the coelenterates ( cnidarians and rib jellyfish ) . In the original case it is cell-free , but in most groups different cells migrate into the layer.

The mesogloea consists of 98% water, and it also contains collagens , mucosaccharides and glycoproteins . The immigrated, mostly epidermal, but also gastrodermal cells, form a skeleton of fibrils in some taxa . In the umbrella jellyfish (Scyphozoa) and the flower animals (Anthozoa) the mesogloea is usually very voluminous, while in the hydrozoa it only forms a narrow supporting lamella. In the medusa ( jellyfish ) as well as the rib jellyfish, the mesogloea also plays a role in buoyancy.

Individual evidence

  1. a b Cleveland P. Hickman et al. : Zoology. Pearson Studium, 2008, ISBN 978-3827372659 , p. 397.