Typhlosole

Typhlosole

A typhlosole is an internal fold of the intestine or intestine inner wall. Typhlosoles occur in bivalve mollusks and some annelids, and echinoderms.

In earthworms, it is a dorsal flap of the intestine that runs along most of its length. Its function is to increase intestine surface area for more efficient absorption of digested nutrients. In different earthworm families, the typhlosole appears to have multiple origins. The Lumbricidae, for example, have a typhlosole which is an infolding of all layers of the intestine wall, whereas in some other families (e.g. Megascolecidae), it is an infolding of only the inner layer, and in many earthworms it is absent.

ee also

*body cavity {coelom)


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  • Typhlosole — Typh lo*sole, n. [Gr. ? blind + ? channel.] (Zo[ o]l.) A fold of the wall which projects into the cavity of the intestine in bivalve mollusks, certain annelids, starfishes, and some other animals. [1913 Webster] …   The Collaborative International Dictionary of English

  • typhlosole — a spirally coiled fold of the intestinal wall; in jawed fishes it can be developed into a spiral valve …   Dictionary of ichthyology

  • typhlosole — n. [Gr. typhlos, blind; solen, channel] A longitudinal infolding of the dorsal intestinal wall into the intestinal lumen …   Dictionary of invertebrate zoology

  • typhlosole — /tif leuh sohl /, n. Zool. (in annelids and many bivalve mollusks) an infolding along the inner wall of the intestine. [1855 60; < Gk typhlo (comb. form of typhlós blind) + sole (appar. irreg. shortening of Gk solén pipe, channel)] * * * …   Universalium

  • typhlosole — noun a fold in the surface of the intestines of some invertebrates etc that increases its digestive surface area …   Wiktionary

  • typhlosole — typh·lo·sole …   English syllables

  • typhlosole — /ˈtɪfləsoʊl/ (say tifluhsohl) noun an inwardly projecting fold of the intestine of some invertebrates such as the earthworm or vertebrates such as the shark. {Greek typhlos blind + sōlēn channel} …  

  • typhlosole — ˈ ̷ ̷ ̷ ̷ˌsōl noun ( s) Etymology: typhl + Greek sōlēn channel, pipe more at syringe : a longitudinal fold of the wall projecting into the cavity of the intestine especially in bivalve mollusks, some annelids, and starfishes …   Useful english dictionary

  • annelid — /an l id/, n. 1. any segmented worm of the phylum Annelida, including the earthworms, leeches, and various marine forms. adj. 2. belonging or pertaining to the Annelida. Also, annelidan /euh nel i dn/. [1825 35; see ANNELIDA] * * * Any member of… …   Universalium

  • Craniata — For the class of brachiopods, see Craniforma. Craniata Temporal range: Early Cambrian Recent …   Wikipedia

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