モルモットの中耳骨胞粘膜の毛細血管構造と耳管機能について

抄録

We focused on the eustachian tube of the Ginea pig (which is functionally a patulous eustachian tube also called a safty tube) and then studied ventilation of the tympanic bulla. The tympanic bulla revealed a low PO₂ tension of approximately 40 mmHg which was affected by the respiratory gases. Scanning electron micrograph showed that capillary structure from the bone wall were divided into a relatively small number of the branches and that many branched arteries and veins formed vessel plexuses with active metabolism just under the mucous epithelium. These observation showed that thus the gas metabilism being closely related to ventilation of the human middle ear cavity and submucousal capillary structure in the tympanic bulla are supposed to extremely related to the gas metabolism.