释义 |
gill pouch
gill pouch n (Zoology) any of a series of paired linear pouches in chordate embryos, arising as outgrowths of the wall of the pharynx. In fish and some amphibians they become the gill slits gill pouch
gill pouch outgrowths of the pharynx in early embryos that give rise to gills in fish and in amphibian larvae. In higher vertebrates, they usually disappear in further development. |