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  2. Glass frog - Wikipedia

    en.wikipedia.org/wiki/Glass_frog

    The general background coloration of most glass frogs is primarily lime green, the abdominal skin of some members of this family is transparent and translucent, giving the glass frog its common name. The internal viscera, including the heart, liver, and gastrointestinal tract, are visible through the skin. When active their blood makes them ...

  3. Tympanum (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Tympanum_(anatomy)

    A frog's ear drum works in very much the same way as does a human eardrum. It is a membrane that is stretched across a ring of cartilage like a snare drum that vibrates. Crossing the middle ear chamber there is an ossicle called the columella that is connected to the tympanum, and another ossicle, the operculum, that connects this to the oval ...

  4. Trabeculae carneae - Wikipedia

    en.wikipedia.org/wiki/Trabeculae_carneae

    There are two kinds: Some are attached along their entire length on one side and merely form prominent ridges, Others are fixed at their extremities but free in the middle, as in the moderator band in the right ventricle, or the papillary muscles that holds chordae tendinae, which are connected to cusps of valves to control flow of blood into the heart

  5. Amphibian - Wikipedia

    en.wikipedia.org/wiki/Amphibian

    The tailed frog (Ascaphus truei) exhibits internal fertilisation. The "tail" is only possessed by the male and is an extension of the cloaca and used to inseminate the female. This frog lives in fast-flowing streams and internal fertilisation prevents the sperm from being washed away before fertilisation occurs. [89]

  6. Columella (auditory system) - Wikipedia

    en.wikipedia.org/wiki/Columella_(auditory_system)

    As a result, the amphisbaenian is able to detect substrate vibrations as it burrows through the ground while protecting the internal ear from damage. [9] Amphisbaenians otherwise lack an external ear structure, likely due to selective pressure to protect the middle and inner ears from damage as the animal burrows.

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  8. Vocal sac - Wikipedia

    en.wikipedia.org/wiki/Vocal_sac

    A fully distended vocal sac in an Australian red-eyed tree frog (Litoria chloris) Italian tree frog (Hyla intermedia) with an inflated vocal sac. The vocal sac is the flexible membrane of skin possessed by most male frogs and toads. The purpose of the vocal sac is usually as an amplification of their mating or advertisement call.

  9. Frog - Wikipedia

    en.wikipedia.org/wiki/Frog

    Frogs and toads are broadly classified into three suborders: Archaeobatrachia, which includes four families of primitive frogs; Mesobatrachia, which includes five families of more evolutionary intermediate frogs; and Neobatrachia, by far the largest group, which contains the remaining families of modern frogs, including most common species ...