Stiegailo-Stoianova A. Features of morphology of kidneys in dog's puppies

3. Morphology of kidneys is investigational in not thoroughbred dog's puppies of new-born and suckling periods. The features of topography consist in that kidneys can bed at one level, left kidney behind right, and right one behind left. Well expressed renal striation appears in the puppies of new-born period and it is smoothed out to 40-day's old gradually, absolute mass of kidneys and their adipose capsule is more intensive increased in the left kidney, as compared to right. For new-born puppies the relative area of renal cortex occupies the third part a medulla, however to the end of suckling period this index is increased and makes a half already. In one day's dog puppies comes to light most midcortical, less than cortical nephrons and the least juxtamedullary, to the end of suckling period maintenance midcortical and juxtamedullary nephrons is increased, and cortical, vice versa, diminishes. During new-born and suckling periods distance between the external and internal sheet of capsule of ball narrows, that testifies to the increase of volume of vascular glomerular. It is set that on the diameter of intraorgan vessels of kidneys and vessels of microvasculature bed the place of their location influences in an organ, here, the diameter of afferent and efferent glomerular arteriole depends on the type of nephron kidneys for the puppies of dogs. Researches of kidneys in dog's puppies of new-born and suckling periods testify to the uncompleteness of structural all of the tools and their blood vessels, which during 40 days of life of animals, acquires a definitive structure.