［第22回前庭研究会］前庭器官の血管系 [in Japanese] Circulatory System of Vestibular Apparatus [in Japanese]
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The blood circulatory system in the inner ear was observed by using India ink under a light microscope.<BR>In the cochlea, there exist numerous blood vessels in the stria vascularis. On the other hand, sensory hair cells are surrounded with a few blood vessels.<BR>In the vestibuli, there are numerous blood vessels developing under the basement membrane of sensory hair cells.<BR>It is supposed that stria vascularis supplies oxigen and nourishment to sensory hair cells of the coehlea through endolymph, while the blood vessels under the basement membrane supply them to the sensory hair cells of the vestibuli.<BR>Under a light microscope, blood vessel nets are visible on the outside of the tegmentum of ampulla. On the inner side of the blood vessel nets, the following tissues are layered; the lining of cuboidal cells, the lining of collagen tissues, and the lining of cyrindrical cells. The last ones face the endolymphatic space.<BR>By electronmicroscope, the most striking findings are the intercellular digitation and basal infolding of these cyrindrical cells. The blood vessels of the tegmentum gather in the planum semilunatum, and ATP-ase activity is shown on the membrane of cyrindrical cells and on the wall of blood vessels.<BR>Either India ink or succinic dehydrogenase solution poured into the perilymphatic space was found in the cyrindrical cells and in the planum semilunatum.<BR>From these experiments, it ig speculated that the blood vessel nets play an important role in the circulation of perilymph.
- OTOLOGIA FUKUOKA
OTOLOGIA FUKUOKA 14(Supplement1), 126-130, 1968
JIBI TO RINSHO KAI