or'gan on

[G.] [BNA] An organ, o. audi'tus BNA], organ of hearing, including the external, [ middle, and internal ear. or'gan a genita'lia [BNA], the genital organs, the female being distinguished as the o. g. muUehra, and the male as o. g. virilia. o. gus'tus [BNA], gustatory organ, organ of taste, located in the papillae of the mucous membrane of the tongue, chiefly in the vallate papillae, or'gan a oc'uli acce o'ria " BNA], the acce ory organs of the eye, consisting of the eyelids, lacrymal apparatus, and extrinsic muscles of the eyeball, o, olfac'tus [BNA], olfactory organ, organ of smell, the olfactory region in the superior portion of the nasal cavity. 0. spira'le [BNA], spiral organ, organ of Corti, a prominence on the inner portion of the membrana basilar is in the duct us cochlear is, containing the terminal auditory apparatus of the cochlea its various structures are the rods of Corti, the hair cells or cells of Corti, the cells of Deiters, the cells of Hensen, the cells of Claudius, and the membrana tectoria. o. tac'tus, organ of touch, any one of the sensory end*-organs. o. uropoet'icum, pi. organa uropoetica [BNA], one of the uropoietic organs, or organs concerned in the excretion of urine, o. vi's us [BNA], the organ of vision, the eye and its adnexa. o. vomer on as a'le [BNA], Jacob son's organ, a fine horizontal canal, ending in a blind pouch, in the mucous membrane of the nasal septum, beginning just behind and above the duct us incisivus.