Quain's elements of anatomy . lood-vessel ;/, nerves in spiral lamina ; g, epithelium of spiral groove ; h, nerve-fibres passing towardsinner hair-ceUs, i, k ; I. auditory hairlets on inner hair-cells ; /, I, lamina reticularis ;m, heads of the rods of Corti, jointed together ; the inner rod is seen in its whole length ;the outer one is broken off half way, and the next one comes into view ; n, cell at base ofinner rod ; p, q, r, outer hair-cells; s, a cuticular process extending upwards, and pro-bably belonging to a cell of Deiters; t, lower ends of hair cells ; two of them are attachedby cut
Quain's elements of anatomy . lood-vessel ;/, nerves in spiral lamina ; g, epithelium of spiral groove ; h, nerve-fibres passing towardsinner hair-ceUs, i, k ; I. auditory hairlets on inner hair-cells ; /, I, lamina reticularis ;m, heads of the rods of Corti, jointed together ; the inner rod is seen in its whole length ;the outer one is broken off half way, and the next one comes into view ; n, cell at base ofinner rod ; p, q, r, outer hair-cells; s, a cuticular process extending upwards, and pro-bably belonging to a cell of Deiters; t, lower ends of hair cells ; two of them are attachedby cuticular processes to the basilar membrane ; 2V, a nerve-fibril passing into an outerhair-cell; s, a sustentacular cell of Deiters. which stand upon the basilar membrane, the outer series (), at someMttle distance from the inner (), and are inclined towards each other,coming in contact above. In this way each pair of rods forms a pointedarch with slanting sides (fig. 402), and since the rods of each series are Fig. Fig. 402.—A PAIR OF RODS OFCORTI, FROM THE RABBITs cochlea,insideview. ()Highly magnified. b, i, basilar membrane; ,inner rod ; e. r, outer rod. Thenucleated protoplasmic masses atthe feet are also shown. in lateral juxtaposition, the double row of inclined columns forms atunnel (fig. 399) along the whole extent of the cochlear canal. On the inner side of the inner series of rods is a row of epithehal cells(fig. 401, i), which are sunnounted by a brush of fine, short, stiff hairlets,and external to the outer rods are three or four successive rows of similar 462 THE EAE. but more elongated cells {p, q, r). These cells are termed respectivelythe inner and outer hem-cells. The hairlets of the outer hair-cells pro-ject tlirough apertures in a curiously formed cuticular membrane, termedthe reticular lamina (399, /. r.), which covers this part of the organ ofCorti like a wire net. On either side of the two sets of hair-cells theepithelium, becoming g
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
