. Comparative anatomy. Anatomy, Comparative. INCUSCQUADRATEJ MALLEUS CARTICULAR) MECKEL'S CARTILAGE CMANDIBULAR) HYOID DENTARY- STYLOHYOD LIGAMENT CHY0ID3 â. C AMPHIBIAN AND REPTILE. D. MAMMAJL. Fig. 190.âDiagrams of the first and second visceral arches in .4, Elasmobranch, B, Teleost, C, Amphibian and Reptile, and D, Mammal, illustrating the transformation of the hinge of the jaw of lower vertebrates into the malleus and incus of the mammal. The third earbone, the stapes, comes from the hyomandibular. (Redrawn after Gegenbaur and Stempell.) Development of the Visceral Skeleton. In the human e
. Comparative anatomy. Anatomy, Comparative. INCUSCQUADRATEJ MALLEUS CARTICULAR) MECKEL'S CARTILAGE CMANDIBULAR) HYOID DENTARY- STYLOHYOD LIGAMENT CHY0ID3 â. C AMPHIBIAN AND REPTILE. D. MAMMAJL. Fig. 190.âDiagrams of the first and second visceral arches in .4, Elasmobranch, B, Teleost, C, Amphibian and Reptile, and D, Mammal, illustrating the transformation of the hinge of the jaw of lower vertebrates into the malleus and incus of the mammal. The third earbone, the stapes, comes from the hyomandibular. (Redrawn after Gegenbaur and Stempell.) Development of the Visceral Skeleton. In the human embryo a series of visceral arches separated by pharyngeal pouches appear in relations corresponding to those of aquatic vertebrates. In the first of those arches the maxilla of the upper jaw and the mandible of the lower jaw develop as membrane bones. The mandible, however, surrounds a cartilage, Meckel's cartilage, which corresponds to the mandibula or cartilage of the lower jaw of elasmobranchs. While most of Meckel's cartilage disappears during ontogenesis, that portion which extends into the cavity of the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Neal, Herbert V. (Herbert Vincent), 1869-1940; Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : P. Blakiston's Son
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