peritrophic membrane

peritrophic membrane
An extracellular sheath in which chitin is present, separating the apical surface of the mid-gut that protects the gut cells from mechanical damage caused by abrasive food particles; usually loosening from the mid-gut and remaining around the food, passing with the feces.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • peritrophic membrane gland — (Order Stomatopoda): Pair of small glands, one extending along each side of posterior (pyloric) stomach; opens into midgut and secretes membrane (peritrophic membrane) surrounding food material coming from digestive glands [Stachowitsch, 1992] …   Crustacea glossary

  • peritrophic membrane — Chitinous sheath secreted around feces (e.g., some Ostracoda) [Moore and McCormick, 1969]. Chitinous sheath secreted around feces [McLaughlin, 1980]. (Order Decapoda): Chitinous membrane, secreted in anterior region of midgut and surrounding… …   Crustacea glossary

  • peritrophic membrane — a delicate, cylindrical sheath of chitin continuously secreted from the posterior edge of the foregut of insects and millipedes that ingest solid food, which surrounds the food as it passes through the midgut …   Medical dictionary

  • peritrophic membrane — |perə.|träfik noun Etymology: International Scientific Vocabulary peri + trophic : a tubular chitinous sheath inside the midgut of many insects that is continuously secreted at the anterior end of the midgut …   Useful english dictionary

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