Comparative Anatomical and Morphometric Analysis of Eustachian Tube Across Species.

ABSTRACT: Background/Objectives: The Eustachian tube (ET) is a physiological channel connecting the middle ear with the external atmosphere. The ET plays a role in maintaining the pressure balance of the middle ear, protecting it from pathogen invasion, and cleaning secretions. Eustachian tube dysfunction (ETD) can lead to middle ear diseases in animals. The ET morphological structure are different across species. Therefore, we aim to compare the anatomical and morphological of ET across species. Methods: The combined skull base-nasal approach was used to anatomy ET. Hematoxylin-eosin, luxol fast blue myelin and immunohistochemical Staining were used to observe the morphology of ET. Results: There were significant differences in the size and structure of ET among species: the ro

SUBMITTER: Li R 

PROVIDER: S-EPMC12561518 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature