olfactory bulb


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Related to olfactory bulb: Olfactory tract, olfactory nerve

olfactory bulb

n.
The bulblike distal end of the olfactory lobe, where the olfactory nerves begin.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

olfactory bulb

n
(Anatomy) the anterior and slightly enlarged end of the olfactory tract, from which the cranial nerves concerned with the sense of smell originate
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

olfac′tory bulb`



n.
the anterior swelling of each olfactory lobe, in which the fibers of the olfactory nerve terminate.
[1865–70]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.olfactory bulb - one of two enlargements at the terminus of the olfactory nerve at the base of the brain just above the nasal cavities
neural structure - a structure that is part of the nervous system
olfactory brain, rhinencephalon - a center in the cerebral hemispheres that governs the sense of smell in lower animals; in humans it seems to mediate complex emotional behavior
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Although the olfactory bulb was proportionately small, suggesting poor sense of smell, the researchers were surprised to find this weaker sensibility was not offset with an enhanced visual system, as seen in primates today.
"To be potentially useful in humans, the main hurdle would be to identify a source of cells capable of engrafting, differentiating into olfactory neurons, and properly connecting to the olfactory bulbs of the brain.
Prognostic value of olfactory bulb volume measurement for recovery in postinfectious and posttraumatic olfactory loss.
Finally, the researchers analysed the tissue in the noses and olfactory bulbs of fish to see if gene expression also changed.
Earlier research has shown that the receptors in the olfactory bulb detect not only smells but also variations in the airflow itself.
A-E) Five 6-10-week-old female C57BL/6 mice were infected subcutaneously with 104 FFU of Toro-2003 (blue) or HB171/11 (red), and viral burden in CNS tissue (olfactory bulb [A], cerebrum [B], cerebellum [C], brain stem [D], and spinal cord [E]) was measured by quantitative PCR and normalized to intracellular glyceraldehyde 3-phosphate dehydrogenase levels.
Nevertheless, there were no reports describing that both gene and protein expression of AdipoR1 and AdipoR2 were present in the olfactory bulb of the rat brain even though the effect of APN in the responsiveness in olfactory system had been previously described [23].
Primary olfactory bulb of Parkinson's disease imaging study of volume measurement.
And the human olfactory bulb, the brain region that processes odour signals, is large and houses as many neurons as it does in many other mammals.
Several postmortem studies identified the accumulation of typical protein deposits in the olfactory bulb (OB)/olfactory tract, namely, amyloid [beta] (A[beta]), hyperphosphorylated Tau (p-Tau) within neurofibrillary tangles (NFT), and alpha-synuclein (a-Syn) aggregates in the form of Lewy bodies (LB) and Lewy neurites [8].
Together with their accompanying envelope of olfactory nerve fibroblasts (ONFs), they enfold the bundles of olfactory nerve fibers in their path from the nasal mucosa to make synaptic connections in the olfactory bulb [16-19].