operculum

(noun)

a covering flap or lidlike structure in plants and animals, such as a gill cover

Related Terms

  • ossified
  • Osteichthyes
  • Chondrichthyes

Examples of operculum in the following topics:

  • Characteristics and Evolution of Amphibians

    • Amphibians also have an auricular operculum, which is an extra bone in the ear that transmits sounds to the inner ear.
  • Gnathostomes: Jawed Fishes

    • Water is drawn over gills that are located in chambers covered and ventilated by a protective, muscular flap called the operculum.
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