. The anatomy of the domestic animals. Veterinary anatomy. Fig. 707. —Left Membran. (En- /, Cochlea; 2, fenestra vestibuli; 3, fenestra coch- leae; 4, ductus endolymphaticus; o, dorsal, 6", lateral, 7, ventral, duct. (After Ellenberger, in Leisering's At- las.) Fig. liyX—Schematic Sectioxal Vi /, 2, 5, Doreal, lateral, and ventral due utricle; 5, sacci:le; 6, cochlea; 7, acoustic (After Ellenberger, in Leisering's Atlas.) to the outer wall of the cochlea. The tympanic wall or floor intervenes between the cochlear duct and the scala tympani; it is formed by the periosteum of the mar- ginal
. The anatomy of the domestic animals. Veterinary anatomy. Fig. 707. —Left Membran. (En- /, Cochlea; 2, fenestra vestibuli; 3, fenestra coch- leae; 4, ductus endolymphaticus; o, dorsal, 6", lateral, 7, ventral, duct. (After Ellenberger, in Leisering's At- las.) Fig. liyX—Schematic Sectioxal Vi /, 2, 5, Doreal, lateral, and ventral due utricle; 5, sacci:le; 6, cochlea; 7, acoustic (After Ellenberger, in Leisering's Atlas.) to the outer wall of the cochlea. The tympanic wall or floor intervenes between the cochlear duct and the scala tympani; it is formed by the periosteum of the mar- ginal ]3art of the lamina spiralis and the membrana basilaris, which stretches be- tween the free edge of the lamina and the outer wall of the coclilea. The outer wall consists of the fibrous lining of the cochlea, which is greatly thickened to form the Ugamentum spirale cochlese. Structure.''—Tlie membranous lal:iyrinth consists in general of an outer thin fibrous layer, a middle transparent tunic, and an internal epithelium, composed of flattenetl cells. But in certain situations special and remarkable structures occur, among which are the follo-ndng: (1) The maculae acousticae appear as small whitish thickenings of the inner walls of the saccule and utricle. The epithelium here consists of two kinds of cells, viz., supporting cells and hair cells. The latter are flask-shaped and are surrouniled by the fusiform supporting cells. The free end of each hair cell bears a stiff, hair-like process composed of a bundle of cilia. Fibers of the saccular and utricular branches of the vestibular nerve form arborizations about the basal parts of the hair cells. Adherent to the surface of the raaculie ' Also termed the membranous semicircular canals. - For the finer structure reference is to be made to the histological Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of the
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectveterinaryanatomy
