Paper - On the development and morphology of the mandibular and hyoid muscles of mammals

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Edgeworth FH. On the development and morphology of the mandibular and hyoid muscles of mammals. (1914) Quarterly J. of Microscopical Science 573-645.

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On the development and morphology of the mandibular and hyoid muscles of mammals

By

Edge worth F. H.

Professor of Medicine, University of Bristol.

With Plates 38-45 and 9 Text-figures.

In the course of a paper on the morphology of the muscles of the head in Vertebrates published in this Journal two years ago, I gave a short description of those of the mandibular and hyoid segments in the rabbit. There is great difficulty in distinguishing muscle-Anlageu from surrounding mesoblast in the early stages of developing Mammals, and, not quite satisfied with some of the statements made, I have re-investigated the phenomena. The inquiry has been much facilitated by Prof. J. P. Hill, who very kindly lent me sections of Dasynrus viverrinus—an animal which is born with two mnsticatory muscles only and an iucudomeckelian joint, and in which the development of typical mammalian muscles and of a squamoso-mandibular joint takes place after birth. These changes can be easily followed, and enable one to interpret the more obscure phenomena. occurring in Mammals with a longer intra-uterine development. Other Mammals have also been investigated, viz. pig, rabbit, Phoca vitnlina, Halichoerus grypns, Bradypus marinoratus, Dasypus uovemcinctus, Manis pentadactyla, Didelphys aurita, Echidna aculeata, Ornithorhyuchus.


The first investigator of the development of’ the masticatory muscles was Renter, who stated that in the pig their Anlage is first visible in embryos of 16 mm. Nacken-Steissliinge in



Cite this page: Hill, M.A. (2019, October 17) Embryology Paper - On the development and morphology of the mandibular and hyoid muscles of mammals. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_On_the_development_and_morphology_of_the_mandibular_and_hyoid_muscles_of_mammals

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