Dynamics of architectonics and structure of wall of liver efferent blood vessels in lambs

UDC 619:611.36:636.32/.38

Skobelskaia T.P.

Summary. Author studied efferent vein of the liver in the 1-, 7-, 12-, 17-, 22-day lambs, using complex morphological methods. Purpose of the study which results are presented in the article is to determine the structural features of the wall thickness of the caudal vena cava and hepatic veins intraorganic efferent as well as dynamic the absolute area of the lumen of the caudal vena cava lambs up to 22-day-old. It was found that the daily lambs efferent vein of the liver form the efferent venous reservoir is part of the caudal vena cava, topographically rapprochement with the liver of animals. Intraorganic left, middle, caudate process of the hepatic veins are main type of branching and flow directly into the caudal vena cava. Venous flow, forming a gentle bend connects the venous reservoir to the caudal vena cava with the highest clearance from the diurnal animals and to 22 days revealed a decrease in the thickness of the wall and its lumen. The wall of the caudal vena cava ventral portion of the shell 3 is presented with the most advanced outdoor, which revealed bundles of longitudinal smooth muscle cells. The thickness of the outer shell of the caudal vena cava containing no longitudinal smooth muscle cells in the thoracic portion being greatest. With age, changes in the morphology of the efferent vein of the liver of lambs are determined primarily asynchronous dynamics of the wall thickness of the shells, while maintaining laws and architectonic structure of the wall identified in animals daily. This results in an increase in the thickness of the wall membranes with decreasing lumen of the vein. The absolute area of the lumen of the caudal vena cava ventral portion tends to increase up to 12-dayold, then marked decrease in the area, against the background of increasing the absolute area of the lumen of the caudal vena cava, thoracic.

Key words: caudal cava vein, hepatic veins, architectonics, structure of a wall, thickness, envelope, absolute square, liver, newborn period, lambs.

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Author affiliation: Skobelskaia Tatyana P., postgraduate student of Department of Anatomy and Physiology of Domestic Animals of Crimean Federal University Agrarnoe, Simferopol, Republic of Crimea, Russian Federation, 295492; рhone: +79788930569; www.15071986@mail.ru – responsible for correspondence with the editorial board.