Gill slits are individual openings to gills, i.e., multiple gill arches, which lack a single outer cover. Such gills are characteristic of cartilaginous fish such as sharks and rays, as well as deep-branching vertebrates such as lampreys. In contrast, bony fishes have a single outer bony gill covering called an operculum.
Most sharks and rays have five pairs of gill slits, but a few species have 6 or …Wikipedia· CC-BY-SA లైసెన్స్ క్రింది టెక్స్ట్- అంచనా పఠనం సమయం: 3 నిమి.
వెబ్4, డిసెం 2020, · Gill slit height is quick to measure on live organisms and is anatomically connected to the gill arch. Here, we relate gill slit height and gill surface area for five Carcharhiniform sharks. We compared both total and parabranchial gill surface area to mean and individual gill slit height in physical specimens.
వెబ్Endodermally derived pharyngeal pouches (pp) contact surface ectoderm and ultimately fuse with this ectoderm (black arrow), giving rise to a gill slit (gs). The columns of tissue that are isolated by adjacent gill slits …
The Origin of Vertebrate Gills - Cell Press
వెబ్perforation. Upon their initial delineation by adjacent gill slits, approximately 3/4 of the epithelium surrounding a pharyngeal arch derives from endoderm, with only the lateralmost 1/4 deriving from ectoderm. By S27/28, differentiated gill filaments are present on the hyoid and gill arches. Elasmobranch em-