![]() 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. 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 individuality of these spaces in all respects is most marked. On the contrary, they have characteristics which are in many respects as definite and constant as ‘those of the ossicles themselves. 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. 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. The Development of the Scala Tympani, Scala Vestibuli and Perioticular Cistern in the Human Embryoĭepartment of Embryology, Carnegie Institution of Washington, Johns Hopkins Medical School, Baltimore, Maryland 1.7 Communication of the Perioticular Spaces with the Arachanoid Spaces.1.6 Periotic Spaces of the Semicircular Canals.1.5 Development of the Scala Tympani and Scala Vestibuli.1.4 Development of the Periotic Cistern of the Vestibule.1.3 Histogenesis of the Periotic Reticulum.1 The Development of the Scala Tympani, Scala Vestibuli and Perioticular Cistern in the Human Embryo.Historic Disclaimer - information about historic embryology pages Historic Embryology: 1880 Platypus cochlea | 1892 Vertebrate Ear | 1902 Development of Hearing | 1906 Membranous Labyrinth | 1910 Auditory Nerve | 1913 Tectorial Membrane | 1918 Human Embryo Otic Capsule | 1918 Cochlea | 1918 Grays Anatomy | 1922 Human Auricle | 1922 Otic Primordia | 1931 Internal Ear Scalae | 1932 Otic Capsule 1 | 1933 Otic Capsule 2 | 1936 Otic Capsule 3 | 1933 Endolymphatic Sac | 1934 Otic Vesicle | 1934 Membranous Labyrinth | 1934 External Ear | 1938 Stapes - 7 to 21 weeks | 1938 Stapes - Term to Adult | 1940 Stapes | 1942 Stapes - Embryo 6.7 to 50 mm | 1943 Stapes - Fetus 75 to 150 mm | 1946 Aquaductus cochleae and periotic (perilymphatic) duct | 1946 aquaeductus cochleae | 1948 Fissula ante fenestram | 1948 Stapes - Fetus 160 mm to term | 1959 Auditory Ossicles | 1963 Human Otocyst | Historic Disclaimer ![]() Hearing Links: Introduction | inner ear | middle ear | outer ear | balance | placode | hearing neural | Science Lecture | Lecture Movie | Medicine Lecture | Stage 22 | hearing abnormalities | hearing test | sensory | Student projectĬategories: Hearing | Outer Ear | Middle Ear | Inner Ear | Balance Streeter Links: George Streeter | 1905 Cranial and Spinal Nerves | 1906 Membranous Labyrinth | 1908 Peripheral Nervous System 10mm Human | 1908 Cranial Nerves 10mm Human | 1912 Nervous System | 1917 Scala Tympani Scala Vestibuli and Perioticular Cistern | 1917 Ear Cartilaginous Capsule | 1918 Otic Capsule | 1919 Filum Terminale | 1920 Presomite Embryo | 1920 Human Embryo Growth | 1921 Brain Vascular | 1938 Early Primate Stages | 1941 Macaque embryo | 1945 Stage 13-14 | 1948 Stages 15-18 | 1949 Cartilage and Bone | 1951 Stages 19-23 | Contributions to Embryology | Historic Embryology Papers | Carnegie Stages | Category:George Streeter The factors involved in the excavation of the cavities in the cartilaginous capsule of the ear in the human embryo. The vascular drainage of the endolymphatic sac and its topographical relation to the transverse sinus in the human. The development of the venous sinuses of the dura mater in the human embryo. Historically, see also by Streeter: Streeter GL. These human embryos are Carnegie Embryos and fetuses from the Carnegie Collection. This 1916 paper by George Streeter (1873-1948) is on the embryonic development of the inner ear.
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