authors
-
Bolesław Otulakowski
- Z Katedry i Zakładu Anatomii Prawidłowej Akademii Medycznej im. K. Marcinkowskiego w Poznaniu.
Kierownik Katedry i Zakładu: Prof. dr hab. med. Witold Woźniak.
keywords
-
urethra man human fetus embriology.
summary
- The investigations were performed in embryos and human fetuses up to the 12* week
- of inrautherinal life.
- It was found that the basic changes in formation of male urethra take place in emb-
- ryonic and early fetal periods (7 to 12 week).
- The urethra and corpus spongiosus, in toto, orginatcs from lamina urethrae, whereas
- the apical part of the urethra, surrounded by glans, originates from both lamina urethrae
- and lamina sinusoidalis.
- In the 1 l'h week a conjunction of lamina urethrae with lamina sinusoidalis takes place
- and this will lead to the formation of the ultimate ostium urethrae. Corpus spongious as
- well as corpora cavernosa and urethra are completely formed in the 12* week of intrau-
- therinal life. The inside of the urethra iscovcredwithmultilayerhexagonal epithelium,
- and the lumen occurs in the bulbourethrical glands.
references
- 1. Fclix W.: The development of urogenital organs. "Manual of human embryology".
- F. Keibel, F.P. Mali Eds. J. B. Lippincot co. Philadelphia and London, 1912.
- 2. Glenister T.W.: The origin and fate of the urethral plate in man. J. Anat., 1954, 88,
- 413.
- 3. Hart D.: On the role of the development of the epidenns in forming sheaths and
- lumina to organs. Illustrated specially in the developinent of the prepuce and urethra.
- J.Anat., 1908, 42, 50-63.
- 4. Johnson F. P.: The devcloptnent of the urethra in the male. J. Urol., 1920, 4, 447.
- 5. Kanagasuntheramn A'., Anadareja S.: Development of the terminal urethra and pre-
- puce in the dog. J.Anat., 1960, 94,121.
- 6. CRahilly R.: Development stages in human embryos. Publ. Cameg. lnstn., 1973.
- 7. CRahilly R., Muecke E. C: The timing and sequcnce of events in the development
- of the human urinary system during the embryonic period proper. Z. Anat. Entwickl.
- Gesch., 1972. 138, 99.
- 8. Otulakowski B.: Rozwój i unerwienie prącia oraz moszny u człowieka w ontogenezie
- prenatalnej. Poz. Rocz. Med. 1977,1,151.
- 9. Perma G.: Sullo sviluppo e sul significatio deiruretra cavernosa deH'uomo. Soc.
- Med. Chir. di Bologna, 1908.
- 10. Spaulding.: The devclopment of the extcrnal genitalia in the human embryo. Contr.
- Embryol Carneg. Instn. 1921,13,67.
- 11. Tello G.P.: Contribution a la cannaissance des terminaisons sensitiyes dans les orga-
- nes genitaux externes et le leur development. Arch. Intern. Neur., 1035,54,521.
- 12. Tourneux F.: Sur les premiers developpinents du tubercule genital ete le mouton C. R.
- Socj. Biol. 1888, 8/5.
- 13. Tourneux F.: Le dćveloppment et l'evolution du tubercule genital chez le foetus hu-
- main dans les sexes, avec quelques remarques concemant le developpment des glans
- prostatiques. J. Anat. (Paris), 1889, 25, 229.
- 14. Williams D. I.: The development and abnormalities of the penile urethra. Acta Anat.,
- 1952,15,176.
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