gill slit

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gill slit

(gĭl)
n.
1. One of several narrow external openings connecting with the pharynx, characteristic of sharks and related fishes, through which water passes to the exterior, thereby bathing the gills. Also called branchial cleft, gill cleft.
2. Embryology One of several rudimentary invaginations in the surface of the embryo, present during development of all air-breathing vertebrates and corresponding to the functional gill slits of aquatic species. Also called branchial cleft, branchial groove, pharyngeal cleft, pharyngeal groove.

gill slit

see GILL CLEFT.
References in periodicals archive ?
Answers: nouns: gill slits, cartilage, lateral lines, prey; adjectives: keen, shallow, endangered, extinct Students will choose and define two new terms in their own words.
He'd barely lost the trace of gill slits and already he was a member of the clan of crossings.
Cameron said: "Work from my lab has shown that enteropneusts filter feed using a pharynx perforated with gill slits, just like the invertebrate chordates.
Water escapes through gill slits, leaving behind the filtered food.
It's good-bye to fins and gill slits, welcome lungs and hair.
Color pattern dominated by eight large dark brown saddle blotches, first on occiput, constricted medially, leading obliquely to blotch below eye; second above pectoral fins, followed anteroventrally by two dark blotches, lower over gill slits, followed by two blotches on dorsal surface connecting obliquely to two dark blotches on side, one below and extending into each dorsal fin and two across caudal fin; terminal lobe of caudal fin with irregular dark blotch; scattered small white spots present over body, most conspicuous within and at edges of large dark brown blotches.