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Animal Structures > Stomach, Ruminant > Omasum

Preferred term

Omasum  

Type

  • Topical Descriptor

Broader concept

Note

  • a ruminant's 3d stomach; dis: coord IM with STOMACH DISEASES /vet (IM); neopl: coord IM with STOMACH NEOPLASMS /vet + histol type /vet (IM); ulcer: coord IM with STOMACH ULCER /vet (IM)

Scope note

  • The third stomach of ruminants, situated on the right side of the abdomen at a higher level than the fourth stomach and between this latter and the second stomach, with both of which it communicates. From its inner surface project large numbers of leaves or folia, each of which possesses roughened surfaces. In the center of each folium is a band of muscle fibers which produces a rasping movement of the leaf when it contracts. One leaf rubs against those on either side of it, and large particles of food material are ground down between the rough surfaces, preparatory to further digestion in the succeeding parts of the alimentary canal. (Black's Veterinary Dictionary, 17th ed)

History note

  • 68

In other languages

URI

http://www.yso.fi/onto/mesh/D009851

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