哺乳類の肺、霊長類の肺、ヒトの肺

比較解剖学的アプローチ

抄録

This is general remarks of the study of mammalian lung. The interpretations of the lung lobes are different among authors. Particulary, in the left lung. Therefore, the author investigates the lungs of 55 species of mammalia to establish the fundamental structure of the bronchial ramification of the mammalian lung: the dorsal bronchiole system, lateral bronchiole system, ventral bronchiole system and medial bronchiole system arise from the dorsal, lateral, ventral and medial sides of both bronchi. Further, two pairs of bronchioles arise from the lateral sides of the trachea. The upper lobe bronchioles are the first branch of the dorsal bronchiole system and two pairs of bronchioles which arise from the lateral sides of the trachea. In this way, three upper lobe bronchioles can be enumerated. The middle lobe bronchiole is the first branch of the lateral bronchiole systems. The accessory lobe bronchiole is the first branch of the ventral bronchiole system. The remaining bronchioles constitute the lower lobe (Nakakuki, 1975, 1980). The author identified the lung lobes not only basing upon the external observation but also basing upon the fundamental structure of the bronchial ramification of the mammalian lung. The results are summarized as show in the Table 1 and Table 2.