WebJul 14, 2024 · The first group is the Superclass Agnatha. This group is the most primitive of the three groups of fish. The fish belonging to this group have no jaws. Their mouths … Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills that are protected under gill covers (operculum) on both sides of the pharynx (throat). Gills are tissues that are like short threads, protein structures called filaments. These filaments have … See more Air breathing fish can be divided into obligate air breathers and facultative air breathers. Obligate air breathers, such as the African lungfish, are obligated to breathe air periodically or they suffocate. Facultative air … See more Lampreys and hagfish do not have gill slits as such. Instead, the gills are contained in spherical pouches, with a circular opening to the outside. Like the gill slits of higher fish, each pouch contains two gills. In some cases, the openings may be fused together, effectively … See more Fish gills are the preferred habitat of many ectoparasites (parasites attached to the gill but living out of it); the most commons are monogeneans and certain groups of parasitic See more • Fish gill respiration • Fish gill structure In bony fish, the gills lie in a branchial chamber covered … See more Sharks and rays typically have five pairs of gill slits that open directly to the outside of the body, though some more primitive sharks have six or seven pairs. Adjacent slits are separated … See more Although most fish respire primarily using gills, some fish can at least partially respire using mechanisms that do not require gills. In some species cutaneous respiration accounts … See more • Aquatic respiration • Book lung • Gill raker • Gill slit See more
Blue in the Face: Breathing Underwater - National Park Service
WebNo, humans did not once have gills. While it is true that many animals that evolved from aquatic life have gills for breathing underwater, humans descended from primates that lived in trees and later adapted to life on land. Thus, they have evolved lungs for breathing air, rather than gills for extracting oxygen from water. WebApr 16, 2024 · The origin of the fish from the tetrapods has been detected with the fossils and their study.. In fossils, the anatomical evidence indicating that gills are present has been the bone structure in the shoulder and skull to support gills.; The transitional species having gills have been the indication that they live in an aquatic environment and utilize … grandview care center oelwein iowa
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WebApr 13, 2024 · The oxygen brought into the lungs moves into the bloodstream while carbon dioxide moves from the bloodstream into the lungs so that it can be exhaled. Gills are respiratory organs used by fish to take in oxygen and get rid of carbon dioxide. Since fish live in water, they don’t breathe in like mammals. Instead, fish open their mouths and ... http://earthguide.ucsd.edu/fishes/kinds/pop_parts_gills.html WebMay 18, 2024 · the vertical plates arranged radially on the underside of mushrooms and many toadstools. 3. the wattles or dewlap of a fowl. ∎ (gills) the flesh below a person's … grandview care center dayton ia