From Embryology

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Fig. 438. The urogenital inside the peritoneal cavity in a human embryo of 11 weeks

Drawn from a fresh preparation.

(Anatomical Collection in Basel)

Follow links from top to bottom, the gonads, the mesonephros, mesonephros with Müllerian and Wolffian duct, beyond the duration of kidney Metanephros. Mesonephros are right, Müller-Wolff and removed shear motion the duration of kidney is completely free. The microscopic examination shows that there are already developing female characters: the top End of the corridor was opened to see Müller for a distance of 1.2 mm.

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Images from - Atlas of the Development of Man (Volume 2)

(Handatlas der entwicklungsgeschichte des menschen)

Kollmann Atlas 2: Gastrointestinal | Respiratory | Urogenital | Cardiovascular | Neural | Integumentary | Smell | Vision | Hearing | Kollmann Atlas 1 | Kollmann Atlas 2 | Julius Kollmann
Links: Julius Kollman | Atlas Vol.1 | Atlas Vol.2 | Embryology History
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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)


Kollmann JKE. Atlas of the Development of Man (Handatlas der entwicklungsgeschichte des menschen). (1907) Vol.1 and Vol. 2. Jena, Gustav Fischer. (1898).

Cite this page: Hill, M.A. (2024, February 26) Embryology Kollmann438.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

Fig. 438. Der Urosenitalapparat im Innern der Peritonealhöhle bei einem

menschlichen Embryo von 11 Wochen

Nach einem frischen Präparat gezeichnet. (Anatomische Sammlung in Basel)

Links folgen sich von oben nach unten die Keimdrüse, die Urniere, Meso- nephros mit Mülle rschem und Wolffschem Gang, dahinter die Dauerniere Metanephros. Rechts sind Urniere, Müller- und Wolff scher Gang entfernt, die Dauerniere liegt vollkommen frei. Die mikroskopische Untersuchung zeigt, daß hier bereits weibliche Entwicklungszeichen vorliegen: das oberste Ende des Müller sehen Ganges war auf einer Strecke von 1,2 mm geöffnet.

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