The topography and division of bronchioli within the so-called pulmonary acinus in man.

In 30 left human lungs the topography and division of the bronchioli of the so-called pulmonary acinus were studied. In all cases the so-called terminal bronchioli divided dichotomously at the angle of 100 degrees-160 degrees. Parallel and perpendicular type of the course of branches of the terminal bronchiolus was distinguished. In each segment the topography of artery and bronchus corresponded to that of acinus of the segment.