Morphological study of the vascular supply in the kidney of the Japanese quail
1991
Nasu, T. (Miyazaki Univ. (Japan). Faculty of Agriculture) | Katoh, K. | Nakai, M.
The cast of renal vascular system of the Japanese quail was observed with scanning electron microscope. The results were summarized as follows. The Arteria renalis cranialis arose from the Aorta descendens and distributed the cranial division of the kidney to divide into four primary branches. The A. renalis media arose from the A. ischiadica supplied the middle division of the kidney. The A. renalis caudalis arose from near the origin of the A. renalis media and ran caudally to supply the caudal division of the kidney. The A. intralobulares branch of the A. renalis, became the Arteriola glomerularis afferens, capillaries of the Glomerula and the Arteriola glomerularis efferens. The A. glomerularis efferens and the V. interlobulares which was the renal portal vein formed the capillary plexus of renal parenchyma. The Glomerula which was near the surface of the cortex was smaller in size and it's capillary plexus was more simple than that positioned deeper layer of the cortex. The kidney of the quail received venous blood from the Vena iliaca externa, the V. ishiadica and the V. iliaca interna. These vessels anastomosed to form the renal portal system. There was a renal portal valve at the point there the V. iliaca externa and the V. renalis caudalis united to the V. iliaca communis. The apex of the valve pointed toward the V. iliaca communis. By constriction of this valve the blood in the pelvic limb might flow into the capillary plexus of the kidney parenchyma. So the renal portal system may play an important part in urate excretion to the capillary plexus. The capillaries in the medulla and cortex drained into the V. interlobulares which was finally followed by the V. renalis
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