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The Vascularization of the Kidneys in Bufo bufo (L.), Bombina variegata (L.), Rana ridibunda (L.) and Xenopus laevis (D.) (Amphibia, Anura) as Revealed by Scanning Electron Microscopy of Vascular Corrosion Casts
Author(s) -
Lametschwandtner Alois,
Albrecht Ursula,
Adam Hans
Publication year - 1978
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.1978.tb00107.x
Subject(s) - rana ridibunda , xenopus , toad , biology , salientia , bufo , anatomy , amphibian , rana , efferent , kidney , dorsal aorta , afferent , zoology , endocrinology , microbiology and biotechnology , ecology , biochemistry , stem cell , haematopoiesis , gene
The vascular patterns of the ventral side of the kidneys in Bufo bufo and Rana ridibunda is similar. Strong venulae renales revehentes dominate. In Bombina variegata and Xenopus laevis , however, also many superficially located glomeruli are found at the ventral side. In Xenopus further branching of the renal arteries into afferent arterioles attracts attention. Bundles of delicate afferent arterioles originate within circumscribed areas of the renal artery. The glomerular layer of the kidney is tightest in Bombina , and has its maximal extension in Rana. It covers up to 2/3 of the thickness of the kidney while in the other species studied the glomeruli are restricted to the ventral third of the kidney. Glomeruli with double afferent or efferent arterioles were rarely found in Xenopus. The vascularization of the dorsal side of the kidneys is characterized by the presence of large ( Bufo, Rana, Xenopus ) or small ( Bombina ) venulae renales advehentes.