Summary
Anatomical investigations have been carried out on rats of two different strains. The kidney weight was shown to be linearly dependent upon body weight. Microdissections of superficial nephrons revealed that there is a significant correlation between kidney weight and the length of the proximal convolution, loop of Henle and distal convolution. The mean length of the proximal convolution in a 1 g kidney was 5.91 mm, and of the loop of Henle (pars recta of the proximal tubule included) 6.50 mm. The bend of loops of Henle belonging to superficial nephrons was always situated in the outer medulla.
Zusammenfassung
An den Nieren von Ratten zweier unterschiedlicher Stämme wurde die Länge oberflächlich gelegener Nephrone mit der Mikrodissektionsmethode bestimmt. Dabei war eine direkte Korrelation zwischen dem Nierengewicht und den einzelnen Abschnitten des Nephrons (proximales Konvolut, Henlesche Schleife, distales Konvolut) nachweisbar. Die mittlere Länge des proximalen Konvoluts betrug für ein Nierengewicht von 1 g 5,91 mm und für die Henlesche Schleife einschließlich der pars recta des proximalen Tubulus 6,5 mm. Die Umbiegungsstelle von Schleifen oberflächlich gelegener Nephrone lag immer im äußeren Nierenmark. Diese Längenvariationen in Abhängigkeit vom Nierengewicht sind auch auf das Körpergewicht beziehbar, da sich eine annähernd lineare Beziehung zwischen Nierengewicht und Bruttokörpergewicht ergab.
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Wahl, M., Schnermann, J. Microdissection study of the length of different tubular segments of rat superficial nephrons. Z. Anat. Entwickl. Gesch. 129, 128–134 (1969). https://doi.org/10.1007/BF00522242
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DOI: https://doi.org/10.1007/BF00522242