Paper - The Development of the Scala Tympani, Scala Vestibuli and Perioticular Cistern in the Human Embryo

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Streeter G.L. The Development of the Scala Tympani, Scala Vestibuli and Perioticular Cistern in the Human Embryo

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The Development of the Scala Tympani, Scala Vestibuli and Perioticular Cistern in the Human Embryo

George L. Streeter

Department of Embryology/, Carnegie Institution of Washington, Johns H ogokins Medical School, Baltimore, Maryland

NINE fiGURES

The study of the development of the large walled—off connective tissue spaces that surround the membranous labyrinth is particularly interesting in that it shows that they have a very definite morphological individuality. It is evident at least that they are not to be considered as insignificant accessories that merely fill in the waste intervals between the membranous labyrinth and the surrounding cartilage or bone. On the contrary, they have characteristics which are in many respects as definite and constant as ‘those of the ossicles themselves. The individuality of these spaces in all respects is most marked. They make their appearance at a definite stage in the development of the embryo; they are formed at definite places; they pass through a series of definite histogenetic processes; they spread in a definite order and manner and eventually they attain a definite form and structure. The general morphology and relations of these‘ spaces during their developmental period will be described in the following paper, and the opportunity will be taken to point out in the course of the description some of these individualistic features.

Instead of designating the large spaces surrounding the membranous labyrinth as perilymphatic spaces, as has been the general custom since the time of Breschet 1833, they will here be spoken of as perioticular or periotic spaces. The use of the term ‘periotic’ avoids the confusion arising from the incorporation of the Word ‘lymphatic’ in the terminology. The present ten




Cite this page: Hill, M.A. (2024, March 29) Embryology Paper - The Development of the Scala Tympani, Scala Vestibuli and Perioticular Cistern in the Human Embryo. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_The_Development_of_the_Scala_Tympani,_Scala_Vestibuli_and_Perioticular_Cistern_in_the_Human_Embryo

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