[Morphofunctional characteristics of the microcirculatory bed of the cochlear portion of the otic labyrinth]

It has been shown that the microcirculatory system of the cohlear portion of the labyrinth is a complex of vessels adapted to the organ function. The analysis of the blood passages in the cochlear channel has shown that in accordance with the organ structure there occurs a spacious subdivision of the micrcirculatory bed into working units (segments) which are functionally integrated into a single microcirculatory system. Quantitative estimation of the microcirculatory system parameters has shown that 1) the blood volume which comes into the microcirculatory system is distributed between the vessels as following: 26%--arterioles: 8%--precapillaries; 29%--capillaries; 8%--postcapillaries and 29%--venules. 2) 639 capillaries fall on 1 mm-2 of the vascular strip and their diffuse surface is 1,3 mm-2.