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the olfactory neuroepithelium is composed of receptor and supporting cells and olfactory glands of Bowman, located in the superior part of the nasal cavities. The receptor cells are neurons with dendritic extensions into the overlying mucus and axons that transverse the cribriform plate as the olfactory fila and synapse with second-order neurons in the glomeruli of the olfactory bulb.
Etymology: L, olfactus, sense of smell
the apparatus in the mucous membrane of the nose responsible for the sense of smell. It includes the sensory nerve endings and the olfactory bulb of the brain.
a somewhat independent body part that performs a specific function or functions.
organ of Corti
the organ lying against the basilar membrane in the cochlear duct, containing special sensory receptors for hearing, and consisting of neuroepithelial hair cells and several types of supporting cells.
a muscle or gland that contracts or secretes, respectively, in direct response to nerve impulses.
see enamel organ.
female reproductive organ
paired ovaries, uterine tubes, uterus, vagina and vulva.
Golgi tendon organ
see golgi tendon organ.
see taste bud.
organ of Jacobson
see vomeronasal organ (below).
male reproductive organ
paired testes, gonadal duct systems (epididymis, ductus deferens), accessory glands, urethra, penis, prepuce and scrotum.
the organ of smell in the nasal mucosa consisting of specialized cells with a tuft of very fine processes protruding into the nasal cavity. Internally they communicate with the olfactory nerves which pass through the cribriform plate of the ethmoid bone to synapse with cells in the glomeruli of the olfactory bulb of the brain.
sense o's, sensory o's
organs that receive stimuli that give rise to sensations, i.e. organs that translate certain forms of energy into nerve impulses which are perceived as special sensations.
any organ which does not contain a cavity or lumen and which is not gaseous; that is an organ which consists of parenchyma and stroma, the latter often arranged as trabeculae or surrounding groups of parenchymatous cells to provide support, e.g. liver, kidney.
organ of Corti.
spiral organ of the inner ear
a small tubercle in the floor of the third ventricle.
the organ affected by a particular hormone.
an organ characterized by the presence of a lumen and four concentric tunics in its wall; centrifugally the layers are mucosal, submucosal, muscular and adventitia-serosal.
vascular organ of the lamina terminalis
in the wall of the third ventricle of the brain.
the cochlear duct, semicircular canals, utricle and saccule that occupy the osseous labyrinth.
an undeveloped organ that, in the embryo or in some remote ancestor, was well developed and functional.
part of the olfactory sense system that consists of a pair of fleshy tubes found on the floor of the nasal cavity on either side of the nasal septum, supported by cartilage sleeve. Probably concerned with scenting and aftersmell of food.