eccentric

(ek-sen’trik). 1. Situated or occurring away from a center. 2. Proceeding from a center. iag section through the right ear: G, external auditory meatus; Tq mem- EAR ξ The external ear: a, helix; 4, fo a of atte Sis fone d, lobule; Hf ant tragus, concha; g, anthelix; A, fo a of helix, Σ bran a tympani; /, tympanic cavity; 0, fenestra oval is; +, f 8, canal; S, [Pe ‘t, scala vestil; Pt, scala tympani. Section of a single turn of the cochlea; SV, scala vestibuli; SAf, scala media; ST, scala tympani; a, bony ti ue; 6, spiral lamina; c, basilar membrane; d, rae ligament; ¢, flat lining cells; Λ spiral p i ες g, Stria v 1;, ei ner’s membrane with epithelium ) of cochlear duct and endothelium (s) of scala vestibuli; ¢, limbus of spiral lamina; 4, tectorial membrane; ms, tunnel of Corti; r, s, inner and outer hair-cells;, cells of Claudius;, spiral ganglion; e,nerves; v, blood-ve el. Section of the organ of Corti: S7, scala tympani; 7C, tunnel of Corti; a, spiral lamina’; 4, subs tanti a propria of basilar b 3.6. ι Ρ covering of pillars of Corti; ¢, oa pillars of Corti; @, endothelial plates; Fi heads of pillars of Corti containing oval areas; #, A’, inner and outer hair-cells;, reticular membrane; 4, 4, cells of Hensen and Claudius; », nerve-fibers; 1, cells of Deiters (Piersol). Interior of Left Labyrinth: a, fovea hemr-elliptic a; 4, fovea “hemispheric a: c, opening of superior and posterior semicircular canals;, opening of aqueduct of vestibule; fa dg, posterior and external semicir- A. spiral tube of cochlea (scala ing of duct of cochlea. Section of the cochlea showing two and ahalf windings of its scala. The small bones of the left ear; external view (enlarged) (after Gray).