olfactory organ


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olfactory neuroepithelium

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.

olfactory organ

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.

organ

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.
effector organ
a muscle or gland that contracts or secretes, respectively, in direct response to nerve impulses.
enamel organ
see enamel organ.
female reproductive organ
paired ovaries, uterine tubes, uterus, vagina and vulva.
genital organ
see penis, vulva, etc.
Golgi tendon organ
gustatory organ
taste bud.
gustus 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.
ocular organ
see eye.
olfactory organ
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.
reproductive o's
those concerned with reproduction. See also penis, vulva, etc.
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.
solid organ
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.
spiral organ
organ of Corti.
spiral organ of the inner ear
the cochlea.
subfornical organ
a small tubercle in the floor of the third ventricle.
target organ
the organ affected by a particular hormone.
tubular organ
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.
urinary organ's
vascular organ of the lamina terminalis
in the wall of the third ventricle of the brain.
vestibulocochlear organ
the cochlear duct, semicircular canals, utricle and saccule that occupy the osseous labyrinth.
vestigial organ
an undeveloped organ that, in the embryo or in some remote ancestor, was well developed and functional.
vomeronasal organ
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.
References in periodicals archive ?
The olfactory organ of Sinocyclocheilus furcodorsalis is an oval-shape consisting of 11 to 13 primary lamellae in both sides.
The epithelium of the lamellae of the anterior, middle and posterior portions of the olfactory organ is composed of ciliated non-sensory cells among which the rod cells (RD) are visible (Fig.
According to the classification given by Yamamoto (1982), the arrangement of olfactory organ in S.
Sinocyclocheilus furcodorsalis, (a), full size picture; (b) dorsal view of the head showing the anterior nostril (ANO), posterior nostril (PNO) and nasal flap (NF); (c) Micrograph from binocular compound microscope showing the cup-shaped olfactory organ raphe (R) and Lamellae (L)
Scanning Electron Micrograph (SEM) showing (a) full picture of the olfactory organ lamellae (L) and raphe (R); (b) showing the ciliated non-sensory cells (CN), rod cells (RD), and supporting cells (S); (c) showing the ciliated non-sensory cells (CN), chloride cells (CC), microvillus (MV); (d) showing the ciliated non-sensory cells (CN), rod cells (RD) and supporting cells (S); (e) showing the ciliated non-sensory (CN), chloride cells (CC), supporting cells (S) and microvillus (M); (f) showing the ciliated non-sensory cells (CN)
The morphology and ultrastructure of the peripheral olfactory organ in newly metamorphosed coral-dwelling gobies, Paragobiodon xanthosomus Bleeker (Gobiidae, Teleostei).
Labyrinth cells, a new cell type in vertebrate olfactory organ, Z.
Development of the olfactory organ in the rainbow fish Nematocentris maccullochi (Atheriniformes, Melanotaeniidae).
The morphology and vascularization of the olfactory organ in Calamoichthys calabaricus (Pisces, Polypteridae).
Structure and development of the olfactory organ in the garfish Belone belone (L.
Comparative morphology of the peripheral olfactory organ in teleosts.
Our previous behavioral studies showed that squid olfactory organs detect L-dopa, a key chemical in melanogenesis.