World Library  
Flag as Inappropriate
Email this Article

Mesoglea

Article Id: WHEBN0003358650
Reproduction Date:

Title: Mesoglea  
Author: World Heritage Encyclopedia
Language: English
Subject: Ctenophora, Mesohyl, Gastrovascular cavity, Nuda, Hydra (genus)
Collection: Cnidarian Anatomy
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Mesoglea

Mesoglea, also known as mesohyl, is the translucent, non-living, jelly-like substance found between the two epithelial cell layers in the bodies of cnidarians and sponges.

The mesoglea is mostly water. Other than water, the mesoglea is composed of several substances including fibrous proteins like collagen and heparan sulphate proteoglycans.[1] The mesoglea is mostly acellular,[2] but in both cnidaria[3] and ctenophora[4] the mesoglea contains muscle bundles and nerve fibres. Other nerve and muscle cells lie just under the epithelial layers.[2] The mesoglea also contains wandering amoebocytes that play a role in phagocytosing debris and bacteria. These cells also fight infections by producing antibacterial chemicals.[5]

The mesoglea may be thinner than either of the cell layers[6] in smaller coelenterates like a hydra or may make up the bulk of the body in larger jellyfish. The mesoglea serves as an internal skeleton, supporting the body. Its elastic properties help restore the shape after it is deformed by the contraction of muscles.[7] However, without the buoyancy of water to support it, the mesoglea is not stiff enough to bear the weight of the body and coelenterates collapse when they are taken out of water.

See also

References

  1. ^ Sarras, M. P.; Madden, M. E.; Zhang, X.; Gunwar, S.; Huff, J. K.; Hudson, B. G. (1991). "Extracellular matrix (mesoglea) of Hydra vulgaris". Developmental Biology 148 (2): 481–494.  
  2. ^ a b Josephson, R. (2004). "The Neural Control of Behavior in Sea Anemones". Journal of Experimental Biology 207 (14): 2371–2372.  
  3. ^ Werner, B.; Chapman, D. M.; Cutress, C. E. (1976). "Muscular and nervous systems of the cubopolyp (Cnidaria)". Experientia 32 (8): 1047–1049.  
  4. ^ Hernandez-Nicaise, M. L. (1973). "The nervous system of ctenophores III. Ultrastructure of synapses". Journal of Neurocytology 2 (3): 249–263.  
  5. ^ Hutton, Danielle M. C.; Smith, Valerie J. (1996). "Antibacterial Properties of Isolated Amoebocytes from the Sea Anemone Actinia equina". Biological Bulletin 191 (3): 441–451.  
  6. ^ Campbell, Richard D. (1976). "Elimination by Hydra interstitial and nerve cells by means of colchicine". Journal of Cell Science 21 (1): 1–13.  
  7. ^ Kier, W. M. (2012). "The diversity of hydrostatic skeletons". Journal of Experimental Biology 215 (8): 1247–1257.  


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.