Histological study of tubular system and collecting tubules inkidney of rats in prenatal stages (Rattus rattus norvegicus Albinus)

Abstract

The aim of our study to provide a more complete quantitive description of the histomorphology of the tubular system and collecting tubules in kidney of rat during prenatal development. The developmental study of tubular system and collecting tubules has been done in the rat fetuses, which including detection the timing of appearance of metanephros collecting tubules. The study revealed that the differentiation and development of the collecting tubules in metanephros began in the rat at 14 day from pregnancy. Also the histological examination showed at the end of pregnancy the tubular system and collecting tubules visible in medulla and less degree in cortex of kidney with clear renal pyramids and well developed long sharp pointed papillae.