Scheme of rhinencephalon. (Olfactory trigone not labeled, but region is visible at bottom left, between anterior perforated substance and olfactory tract.)
Human brainstem anterior view. (Olfactory trigone is #4, at upper right)
Details
Identifiers
Latin
trigonum olfactorium
NeuroNames
34
NeuroLex ID
birnlex_4042
TA98
A14.1.09.432
TA2
5542
FMA
74883
Anatomical terms of neuroanatomy
[edit on Wikidata]
The olfactory trigone is a small triangular area in front of the anterior perforated substance.
Its apex, directed forward, occupies the posterior part of the olfactory sulcus, and is brought into view by throwing back the olfactory tract.
It is part of the olfactory pathway.[1]
References
This article incorporates text in the public domain from page 827 of the 20th edition of Gray's Anatomy (1918)
^Samudralwar DL, Diprete CC, Ni BF, Ehmann WD, Markesbery WR (June 1995). "Elemental imbalances in the olfactory pathway in Alzheimer's disease". J. Neurol. Sci. 130 (2): 139–45. doi:10.1016/0022-510X(95)00018-W. PMID 8586977.
v
t
e
Smell
Microanatomy
Epithelium
glands
mucosa
Sustentacular cell
Tufted cell
Olfactory nerve
Olfactory receptor
neuron
Olfactory bulb
glomeruli
mitral cells
Olfactory tract
Olfactory trigone
Brain areas involved in smell
Primary olfactory cortex
Lateral olfactory stria
1
Piriform cortex
EC-hippocampus system
Entorhinal cortex
Hippocampal formation
Prepyriform area
Periamygdaloid cortex
2
Stria medullaris → Habenular nuclei
3
Amygdala → Stria terminalis → Hypothalamus
4
Medial forebrain bundle → Hypothalamus
Medial olfactory stria
Anterior olfactory nucleus
General
Olfactory system
Olfaction
evolution
v
t
e
Rostral basal ganglia of the human brain and associated structures
Disruption of cerebrospinal fluid flow through the olfactory system may contribute to Alzheimer's disease pathogenesis.
Ethell DW1.
Journal of Alzheimer's disease : JAD.J Alzheimers Dis.2014;41(4):1021-30. doi: 10.3233/JAD-130659.
Plaques and tangles may be manifestations of a more substantial underlying cause of Alzheimer's disease (AD). Disease-related changes in the clearance of amyloid-β (Aβ) and other metabolites suggest this cause may involve cerebrospinal fluid (CSF) flow through the interstitial spaces of the brain,
Cytological organization of the alpha component of the anterior olfactory nucleus and olfactory limbus.
Larriva-Sahd J1.
Frontiers in neuroanatomy.Front Neuroanat.2012 Jun 27;6:23. doi: 10.3389/fnana.2012.00023. eCollection 2012.
This study describes the microscopic organization of a wedge-shaped area at the intersection of the main (MOB) and accessory olfactory bulbs (AOBs), or olfactory limbus (OL), and an additional component of the anterior olfactory nucleus or alpha AON that lies underneath of the AOB. The OL consists o
Chen CC1, Huang F, Zheng JW, Fu SQ, Kong FZ, Chen ZX, Yang XD, Zang CS.
Journal of neurosurgical sciences.J Neurosurg Sci.2010 Mar;54(1):39-44.
AIM: The purpose of this study was to provide practical anatomic data for imaging diagnosis of olfactory pathways and operation of nasal cavity and anterior cranial fossae.METHODS: Sectional anatomy of olfactory pathways were investigated specially on 17 sets of Chinese adult cadavers and 9 sets of