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  2. Branchial arch - Wikipedia

    en.wikipedia.org/wiki/Branchial_arch

    The branchial system is typically used for respiration and/or feeding. Many fish have modified posterior gill arches into pharyngeal jaws, often equipped with specialized pharyngeal teeth for handling particular prey items (long, sharp teeth in carnivorous moray eels compared to broad, crushing teeth in durophagous black carp).

  3. Pharyngeal arch - Wikipedia

    en.wikipedia.org/wiki/Pharyngeal_arch

    The first pharyngeal arch, also mandibular arch (corresponding to the first branchial arch of fish), is the first of six pharyngeal arches that develops during the fourth week of development. [10] It is located between the stomodeum and the first pharyngeal groove .

  4. Meckel's cartilage - Wikipedia

    en.wikipedia.org/wiki/Meckel's_cartilage

    Originally it was the lower of two cartilages which supported the first branchial arch in early fish. Then it grew longer and stronger, and acquired muscles capable of closing the developing jaw. [1] In early fish and in chondrichthyans (cartilaginous fish such as sharks), the Meckelian Cartilage continued to be the main component of the lower jaw.

  5. Dental anatomy - Wikipedia

    en.wikipedia.org/wiki/Dental_anatomy

    If teeth do not start to develop at or near these times, they will not develop at all. A significant amount of research has focused on determining the processes that initiate tooth development. It is widely accepted that there is a factor within the tissues of the first branchial arch that is necessary for the development of teeth. [2]

  6. Human tooth - Wikipedia

    en.wikipedia.org/wiki/Human_tooth

    If teeth do not start to develop at or near these times, they will not develop at all. A significant amount of research has focused on determining the processes that initiate tooth development. It is widely accepted that there is a factor within the tissues of the first pharyngeal arch that is necessary for the development of teeth. [26]

  7. Human tooth development - Wikipedia

    en.wikipedia.org/wiki/Human_tooth_development

    Histologic slide showing a tooth bud. A: enamel organ B: dental papilla C: dental follicle. The tooth germ is an aggregation of cells that eventually forms a tooth. [2] These cells are derived from the ectoderm of the first pharyngeal arch and the ectomesenchyme of the neural crest.

  8. Cyclostomi - Wikipedia

    en.wikipedia.org/wiki/Cyclostomi

    Cyclostomi, often referred to as Cyclostomata / s ɪ k l oʊ ˈ s t ɒ m ə t ə /, is a group of vertebrates that comprises the living jawless fishes: the lampreys and hagfishes.Both groups have jawless mouths with horny epidermal structures that function as teeth called ceratodontes, and branchial arches that are internally positioned instead of external as in the related jawed fishes. [1]

  9. Maxillary central incisor - Wikipedia

    en.wikipedia.org/wiki/Maxillary_central_incisor

    The aggregate of cells which eventually form a tooth are derived from the ectoderm of the first branchial arch and the ectomesenchyme of the neural crest. [7] As in all cases of tooth development, the first hard tissue to begin forming is dentin, with enamel appearing immediately afterwards. [8] [page needed]