operculum
vertebrate anatomy
Quick Summary
The operculum, also known as the opercle, is a bony plate that forms part of the gill cover in most fish. This structure is crucial for protecting the delicate gills, which are the primary respiratory organs for fish, facilitating the exchange of oxygen and carbon dioxide. The operculum, along with other opercular bones like the preopercle, subopercle, and interopercle, creates a bony shield around the gills. This bony covering helps to regulate water flow over the gills, ensuring efficient respiration.1234
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