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  • Title: Renal vasculature of the trout demonstrated by scanning electron microscopy, compared with canine glomerular vessels.
    Author: Anderson BG, Anderson WD.
    Journal: Am J Anat; 1976 Apr; 145(4):443-57. PubMed ID: 1266778.
    Abstract:
    In order to gain additional information regarding renal circulatory patterns, we have used both ink and resin injections to study the arterial supply to the mesonephric kidney of trout. Arterial injections through the dorsal aorta with ink were made for histological preparations in which the length, termination and relationship of glomerular vessels were examined. Similar injections with methyl methacrylate were made in preparation of corrosion casts to provide us with gross replicas of the aortic branches to the kidney as well as casts of glomerular structure for scanning electron microscopy. The sequence of vessels through which arterial blood passed to the renal corpuscle and ultimately to the uriniferous tubules was traced. Each afferent arteriole was found to terminate in three to six branches which formed anastomosing circuits of capillaries; these vessels reunited at the hilum to form a single efferent arteriole. The efferent arterioles in trun traveled a short distance to peritubular capillary beds and sinusoids. Morphological evidence was found for preglomerular sphincter-like action only. The glomerular vessels were found to be similar to, although less complex than, those of the outer and mid-cortical regions of the dog kidney.
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