| olfactory pyramid | A small area of gray matter situated between the roots of the olfactory tracts; it is continuous caudally with the anterior perforated substance. (05 Mar 2000) |
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| olfactory receptor cells | Very slender nerve cell's, with large nuclei and surmounted by six to eight long, sensitive cilia in the olfactory epithelium at the roof of the nose; they are the receptors for smell. Synonym: olfactory cells, Schultze's cells. (05 Mar 2000) |
| olfactory receptor neurons | Neurons in the olfactory epithelium with proteins (receptors, odourant) that bind, and thus detect, odourants. Olfactory receptor neurons are bipolar. They send to the surface of the epithelium apical dendrites with non-motile cilia from which project odourant receptor molecules. Their unmyelinated axons synapse in the olfactory bulb of the brain. Unlike other neurons, they can be generated from precursor cells in adults. (12 Dec 1998) |
| olfactory region of tunica mucosa of nose | The specialised olfactory receptive area that includes the upper one-third of the nasal septum and the lateral wall above the superior concha; it is lined with olfactory mucosa. Synonym: regio olfactoria tunicae mucosae nasi, olfactory region of tunica mucosa of nose, Schultze's membrane. (05 Mar 2000) |
| olfactory roots | Three distinct fibre bands (stria medialis, stria intermedia, stria lateralis) that caudally extend the olfactory tract beyond its attachment to the olfactory trigone. The medial stria curves dorsally into the tenia tecta; the intermediate, often barely visible, extends straight back and terminates in the olfactory tubercle; the lateral olfactory stria, the largest of the three, passes along the lateral side of the olfactory tubercle, curving laterally as far as the limen insulae, then sharply medially to reach the uncus of the parahippocampal gyrus where it terminates in the plexiform layer of the olfactory cortex. See: medial longitudinal stria. Synonym: striae olfactoriae, olfactory roots. (05 Mar 2000) |
| olfactory striae | Three distinct fibre bands (stria medialis, stria intermedia, stria lateralis) that caudally extend the olfactory tract beyond its attachment to the olfactory trigone. The medial stria curves dorsally into the tenia tecta; the intermediate, often barely visible, extends straight back and terminates in the olfactory tubercle; the lateral olfactory stria, the largest of the three, passes along the lateral side of the olfactory tubercle, curving laterally as far as the limen insulae, then sharply medially to reach the uncus of the parahippocampal gyrus where it terminates in the plexiform layer of the olfactory cortex. See: medial longitudinal stria. Synonym: striae olfactoriae, olfactory roots. (05 Mar 2000) |
| olfactory sulcus | The sagittal sulcus on the inferior or orbital surface of each frontal lobe of the cerebrum, demarcating the straight gyrus from the orbital gyri, and covered on the orbital surface by the olfactory bulb and tract. Synonym: sulcus olfactorius, olfactory groove. (05 Mar 2000) |
| olfactory sulcus of nasal cavity | The narrow groove in the nasal cavity above the agger nasi that leads from the atrium to the olfactory area. Synonym: sulcus olfactorius cavum nasi. (05 Mar 2000) |
| olfactory tract | A nervelike, white band composed primarily of nerve fibres originating from the mitral cells and tufted cells of the olfactory bulb but also containing the scattered cells of the anterior olfactory nucleus. The tract is closely applied to the ventral surface of the frontal lobe, and attaches itself to the base of the cerebral hemisphere at the olfactory trigone, beyond which it extends in the form of the olfactory striae which distribute their fibres to the olfactory tubercle and, in largest number, to the olfactory cortex on and around the uncus of the parahippocampal gyrus. See: olfactory nerves. Synonym: tractus olfactorius, olfactory peduncle. (05 Mar 2000) |
| olfactory trigone | A grayish triangular area corresponding to the attachment of the olfactory peduncle ("olfactory nerve" or olfactory tract) to the base of the brain, at the anterior border of the anterior perforated substance. Synonym: trigonum olfactorium. (05 Mar 2000) |
| olfactory tubercle | A small, oval area at the base of the cerebral hemisphere, between the diverging medial and lateral olfactory striae, in the anteromedial part of the anterior perforated substance; it is formed by a small area of allocortex characterised by the presence of the islands of Calleja. Corresponding to a much more prominent structure in nonprimate mammals (especially rodents and insectivores), the olfactory tubercle receives fibres from the olfactory bulb by way of the intermediate olfactory stria; it has efferent connections with the hypothalamus and the mediodorsal nucleus of the thalamus. Synonym: tuberculum olfactorium. (05 Mar 2000) |
| olfacty | Olfacty The unit of smell; the threshold of olfactory stimulation, or the point where the smell is just received in the olfactometer. Synonym: olfacty. Origin: see olfaction (05 Mar 2000) |
| oliban | <chemistry> See Olibanum. Source: Websters Dictionary (01 Mar 1998) |
| olibanum | A gum resin from several trees of the genus Boswellia (family Burseraceae); has been used as a stimulant expectorant in bronchitis, for fumigations, and as incense. Synonym: frankincense, thus. Origin: Ar. Al, the, + luban, frankincense (05 Mar 2000) |
| olibene | <chemistry> A colourless mobile liquid of a pleasant aromatic odour obtained by the distillation of olibanum, or frankincense, and regarded as a terpene. Synonym: conimene. Source: Websters Dictionary (01 Mar 1998) |
Synonyms : Probes, Oligodeoxyribonucleotide, Probes, Oligonucleotide, Probes, Oligoribonucleotide
Synonyms :
Synonyms : Anti-Sense Oligonucleotides, Anti Sense Oligonucleotides, Oligonucleotides, Anti-Sense
Synonyms :
Synonyms :
| olive oil |
oil from olives
출처: wordnet.princeton.edu/perl/webwn
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| Old tuberculin |
(OT) a heat-concentrated filtrate of tubercle bacillus culture grown on a special medium, used for tuberculin tests. Called also Koch's t.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| oligohydramnios sequence |
characteristic flattened facies (Potter facies, qv) and skeletal abnormalities such as clubbed feet and contracted joints, often with hypoplasia of the lungs, caused by compression of the fetus secondary to oligohydramnios, which may result from renal agenesis or other fetal urinary tract defects or from leakage of amniotic fluid. Infants die shortly after birth.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| olfactory epithelium |
pseudostratified epithelium lining the olfactory region of the nasal cavity, and containing the receptors for the sense of smell.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| olive-tipped bougie |
a bulbous bougie with a tip shaped like an olive.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| ol | an elderly person |
|---|---|
| ol | a dead language of the non-German Prussians (extinct after 1700) |
| ol | a greyish-pink color |
| ol | a man who serves as a sailor |
| ol | Low German prior to 1200 |
| ol | a class of people favoring traditional ideas |
| ol | necktie indicating the school the wearer attended |
| ol | a form of all fours in which a total of seven points is game |
| ol | the American South before the Civil War |
| ol | a common long-tailed sea duck of the northern parts of the United States |
| ol | an experienced person |
| ol | a typeface (based on an 18th century design) distinguished by irregularity and slanted ascender serifs and little contrast between light and heavy strokes |