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  2. External gills - Wikipedia

    en.wikipedia.org/wiki/External_gills

    External gills are the gills of an animal, most typically an amphibian, that are exposed to the environment, rather than set inside the pharynx and covered by gill slits, as they are in most fishes. Instead, the respiratory organs are set on a frill of stalks protruding from the sides of an animal's head. The axolotl has three pairs of external ...

  3. Fish gill - Wikipedia

    en.wikipedia.org/wiki/Fish_gill

    The gill arches of bony fish typically have no septum, so that the gills alone project from the arch, supported by individual gill rays. Some species retain gill rakers . Though all but the most primitive bony fish lack a spiracle, the pseudobranch associated with it often remains, being located at the base of the operculum.

  4. Gill - Wikipedia

    en.wikipedia.org/wiki/Gill

    Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill chambers in which they store water, enabling them to use the dissolved oxygen when they are on land.

  5. Fish physiology - Wikipedia

    en.wikipedia.org/wiki/Fish_physiology

    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 forming an operculum. Lampreys have seven pairs of pouches, while hagfishes may have six to fourteen, depending on the ...

  6. Branchial arch - Wikipedia

    en.wikipedia.org/wiki/Branchial_arch

    Gill arches supporting the gills in a pike. Branchial arches or gill arches are a series of paired bony/cartilaginous "loops" behind the throat (pharyngeal cavity) of fish, which support the fish gills. As chordates, all vertebrate embryos develop pharyngeal arches, though the eventual fate of these arches varies between taxa.

  7. The Most Surprising Benefit of Fish Oil, According to Experts

    www.aol.com/lifestyle/most-surprising-benefit...

    While supplement claims can be a bit fishy, here's why many experts recommend fish oil. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 ...

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