[Architectonics and parameters of interlobular bronchioles in residents of western Siberia]

Architectonics and parameters of interlobular bronchioles (ILBs) were examined in corrosion and histological preparations of the right lung in 13 male residents of Novosibirsk died from accidents. It was demonstrated that ILBs were present in all pulmonary segments and subsegments and were carrying the air from subsegmental bronchi to lobular bronchioles. According to architectonics, ILBs could be divided into three types: trunk, scattered and mixed. Majority of ILBs belonged to the trunk type (65-66%), while scattered and mixed types were less frequent (constituting 13-14% and 20-21%, respectively). Right lung contained 230-250 ILBs. The number of lobules stemming from one ILB varied from one to twelve. The average ILB had 3.4 +/- 0.1 branches and was found to ventilate 5.3 +/- 0.3 pulmonary lobules. Parameters of I and II order ILBs were measured separately. No significant differences in the mean ILBs diameters in different lobes and segments were detected. Regularities in length distribution were not found.