抄録
For studying surface areas of the vestibular sensory epithelia, the silver reaction method and succinic dehydrogenase staining were successfully used to demonstrate the over-all view of each sensory epithelium. In the central part of the sensory epithelium of the crista ampullaris, larger sensory cells were often found while in the peripheral regions, smaller sensory cells were observed as they appeared on the surface of the sensory epithelium. Cell density was greater in peripheral areas than in the central region. About two-thirds of all sensory cells in the striola were type I cells. Outside the striola, type I sensory cells included approx 45 per cent of the cells while type II was found among all the remainder. Larger sensory cells of type I which were found in the striola were usually innervated by common nerve chalices, however these cells in the striola contained more succinic dehydrogenase activity than smaller cells located both in the striola and in other peripheral areas of the macula.
