各種哺乳動物の口腔, 咽頭, 喉頭, 気管, 食道各粘膜の比較解剖学的研究

抄録

It is generally accepted that the upper respiratory and digestive tracts in human are farmore susceptible to infection as compared to the ones in the other mammals.
The purpose of this study is to investigate into anatomical and histological differences ofthe upper airway mucous membrane between human and other mammals.
Materials used were mucosal and submucosal tissues from five cats, four dogs, five rats, five rabbits, two cows, two goats, three pigs, three monkeys, and ixteen men.
Both macroscopic and microscopic preparations were studied into the details in an attemptto understand the pecific structure for each species. Among other findings, the specific was that the distribution of submucous glands in the upper respiratory tract was much more abundant in herbivora than in carnivora. It was noticed that submucosal pathology was likely to be in parallel with phylogeny of the animals. The extent of lymphoid tissue proliferation and of round cell infiltration seen in the submucous tissue of respiratory tract was found to be more extensive among more developed mammals. It was inferred that human upper airway tract is less resistive to pathogenic organisms than those of under developed mammals and that the advanced inflammation process observed in submucous tissue of the human upper respiratory tract was the results of protective process of less resistive structures.