A practical treatise on the diseases of the ear including the anatomy of the organ . Utricle and Membranous Semicircular Canals of the Left Side.* Lehrbucli, p. 774. 474 MEMBRANOUS SEMICIRCULAR CANALS. height of the vestibule. By means of a fine vascular andnervous network, and a very delicate connective tissue, it isfastened to the recessus ellipticus of the vestibule. The membranous semicircular canals are but the lining ofthe osseous canals, and, of course, of the same shape. Themembranous canals open into the utriculus with five openings,just as do the osseous tubes in the vestibule. At th
A practical treatise on the diseases of the ear including the anatomy of the organ . Utricle and Membranous Semicircular Canals of the Left Side.* Lehrbucli, p. 774. 474 MEMBRANOUS SEMICIRCULAR CANALS. height of the vestibule. By means of a fine vascular andnervous network, and a very delicate connective tissue, it isfastened to the recessus ellipticus of the vestibule. The membranous semicircular canals are but the lining ofthe osseous canals, and, of course, of the same shape. Themembranous canals open into the utriculus with five openings,just as do the osseous tubes in the vestibule. At the am-. Wall of Membranous Semicircular Membrana propria, artificially separated edge. 2. Epithelium. pullse, the membranous canal fills up the osseous very com-pletely ; but there is some space between the other walls of these structures are transparent, as clear asiwater, and of great delicacy. After the endolymph is re-moved, they fall together and arrange themselves in rigidfolds. There is, however, a point that is firmer, called themacula acustica, situated on the median wall of the utricle,where a twig of the auditory nerve reaches this wall. The MEMBRANOUS SEMICIRCULAR CANALS. 475 portion of the ampulla that contains the termination of thenerve, and which is detected by the naked eye as a whitishyellow spot, is also of firmer consistency. This point is calledthe crista acustica by Max Schultze. It comprises about one-third of the wall of the ampulla. It is sometimes surroundedby a pigmented line. The wall of the membranous semicircular canals is to
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