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That it has been possible to base tbis entire chapter on my own observations, I am indebted to the generous assistance of colleagues who have unselfishly placed at my disposal series of sections from their private collections and from institute collections. In this connection I desire to thank Professor Grosser, Geheimrath Professor R. Hertwig, the late Geheimrath Professor His, Professor Hochstetter, Professor Keibel, Professor R. Meyer, the late Geheimrath Professor Pfannenstiel, Professor Stoerk. and the late Hofrath Professor Zuckerkandl. My colleague, Rob. Meyer, in addition to placing at my disposal over sixty series of sections, has given me the benefit of his rich experience. To my colleagues Dr. Baltischwiler, the late Professor U. Kronlein, Professor Wyder and Professor 0. Wyss I am indebted for fresh material and would also express to them my sincere thanks. | That it has been possible to base tbis entire chapter on my own observations, I am indebted to the generous assistance of colleagues who have unselfishly placed at my disposal series of sections from their private collections and from institute collections. In this connection I desire to thank Professor Grosser, Geheimrath Professor R. Hertwig, the late Geheimrath Professor His, Professor Hochstetter, Professor Keibel, Professor R. Meyer, the late Geheimrath Professor Pfannenstiel, Professor Stoerk. and the late Hofrath Professor Zuckerkandl. My colleague, Rob. Meyer, in addition to placing at my disposal over sixty series of sections, has given me the benefit of his rich experience. To my colleagues Dr. Baltischwiler, the late Professor U. Kronlein, Professor Wyder and Professor 0. Wyss I am indebted for fresh material and would also express to them my sincere thanks. | ||
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Revision as of 14:39, 12 February 2014
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XIX. The Development of the Urinogenital Organs
By W Felix, Zurich. 1
The urinary and reproductive organs, notwithstanding their diverse functions, have been regarded in systematic anatomy and in embryology as constituting a single system, an arrangement which is undoubtedly correct for two reasons. In the first place both groups of organs open into the enlarged caudal portion of the digestive tract, the cloaca; by a subdivision of this cloaca into a ventral portion, which furnishes the anlage for the urinary bladder, the urethra and the urogenital sinus, and a dorsal portion, the rectum, the digestive tract becomes completely and permanently separated from the urinogenital organs, but, on the other hand, these remain connected by the urogenital sinus. In the second place one of the urinary organs, the mesonephros, unites with the reproductive gland and, giving up its provisional function of manufacturing and excreting urine, enters permanently into the service of the reproductive apparatus as the male efferent duct. The urinary and reproductive organs consequently form an inseparable whole in the adult organism.
The study of the development of the urinogenital apparatus divides itself into four portions. These are: (1) the development of the excretory glands and their ducts; (2) the development of the reproductive glands and their efferent ducts; (3) the development of the urogenital union, i.e., the union between the urinary and reproductive glands; and (4) the development of the sinus urogenitalis and in connection with this the development of the external genitalia.
That it has been possible to base tbis entire chapter on my own observations, I am indebted to the generous assistance of colleagues who have unselfishly placed at my disposal series of sections from their private collections and from institute collections. In this connection I desire to thank Professor Grosser, Geheimrath Professor R. Hertwig, the late Geheimrath Professor His, Professor Hochstetter, Professor Keibel, Professor R. Meyer, the late Geheimrath Professor Pfannenstiel, Professor Stoerk. and the late Hofrath Professor Zuckerkandl. My colleague, Rob. Meyer, in addition to placing at my disposal over sixty series of sections, has given me the benefit of his rich experience. To my colleagues Dr. Baltischwiler, the late Professor U. Kronlein, Professor Wyder and Professor 0. Wyss I am indebted for fresh material and would also express to them my sincere thanks.
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Cite this page: Hill, M.A. (2024, April 24) Embryology Book - Manual of Human Embryology 19. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Book_-_Manual_of_Human_Embryology_19
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
