Gas Exchange in the Middle Ear.
نویسندگان
چکیده
منابع مشابه
Role of nitrogen in transmucosal gas exchange rate in the rat middle ear.
This study investigates the role of nitrogen (N2) in transmucosal gas exchange of the middle ear (ME). We used an experimental rat model to measure gas volume variations in the ME cavity at constant pressure. We disturbed the steady-state gas composition with either air or N2 to measure resulting changes in volume at ambient pressure. Changes in gas volume over time could be characterized by th...
متن کاملOn morphometric measurement of oxygen diffusing capacity in middle ear gas exchange.
An accurate mathematical model of transmucosal gas exchange is prerequisite to understanding middle ear (ME) physiology. Current models require experimentally measured gas species time constants for all extant conditions as input parameters. However, studies on pulmonary gas exchange have shown that a morphometric model that incorporates more fundamental physiochemical and anatomic parameters a...
متن کاملVentilation and Gas exchange in middle ear ( R 716 ) ID : 716 . 2 The role of the mastoid in middle ear pressure regulation Presenting
Learning Objectives: Recent studies on the mastoid structure and function has pointed to an important role in middle ear physiology. The normal function of the middle ear depends on regulation of its pressure relative to ambient pressure, and traditionally gas exchange between the middle ear mucosa and gas pocket has been focused on together with the function of the Eustachian tube. However, re...
متن کاملRHABDOMYOSARCOMA OF THE MIDDLE EAR IN AN ADULT
The authors present a case of embryonal rhabdomyosarcoma of the middle ear in an adult patient. Computerized tomography indicated a malignant tumor and the diagnosis was confirmed by pathological analysis.
متن کاملThe Middle Ear
The 41 papers that compose this volume were presented at the McCollumPratt Institute Symposium in the spring of 1958. They fall into four broad categories entitled Developmental Cytology, Cellular and Tissue Interactions in Development, Problems of Specificity in Development, and Control Mechanism in Development. Many of the current leaders in developmental biology contribute to the book either...
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ژورنال
عنوان ژورنال: Practica Oto-Rhino-Laryngologica
سال: 1994
ISSN: 1884-4545,0032-6313
DOI: 10.5631/jibirin.87.1