Olfactory tract

Olfactory tract
Brain: Olfactory tract
Gray732.png
Scheme of rhinencephalon. (Olfactory tract visible at left.)
Latin tractus olfactorius
Gray's subject #189 826
NeuroNames hier-265
NeuroLex ID birnlex_1663

The olfactory tract is a bundle of axons connecting the mitral and tufted cells of the olfactory bulb to several target regions in the brain, including piriform cortex, amygdala, and entorhinal cortex. It is a narrow white band, triangular on coronal section, the apex being directed upward.

It lies in the olfactory sulcus on the inferior surface of the frontal lobe, and divides posteriorly into two striæ, a medial olfactory stria and a lateral olfactory stria.

Additional images

  • The arteries of the base of the brain.

  • Dura mater and its processes exposed by removing part of the right half of the skull, and the brain.

  • Base of brain.

  • Plan of olfactory neurons.

  • The pterygopalatine ganglion and its branches.

  • Human brainstem anterior view

  • Olfactory nerve

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v · d · eHuman brain, cerebrum, Interior of the cerebral hemispheres—Rostral Basal ganglia and associated structures (TA A14.1.09.321–552, GA 9.832–837)
Basal ganglia
Ventral striatum
Other
Rhinencephalon
Olfactory tract (Medial olfactory stria, Lateral olfactory stria) · Olfactory trigone
Other basal forebrain
Diagonal band of Broca · Stria terminalis
Archicortex:
Hippocampal formation/
Hippocampus anatomy

Hippocampus proper: CA1 · CA2 · CA3 · CA4

Dentate gyrus: Fascia dentata

Subiculum
Alveus · Fimbria · Perforant path · Schaffer collateral

M: CNS

anat(n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

noco(m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug(N1A/2AB/C/3/4/7A/B/C/D)
v · d · eSensory system: Olfactory system / Olfaction / Rhinencephalon (TA 15.1, GA 10.992)
Olfactory epithelium
Olfactory glands · Olfactory mucosa · Sustentacular cell
Olfactory nerve: 1° neuron
Olfactory nerve: 2° neuron
Mitral cells → Olfactory tract → Olfactory trigone
Lateral olfactory stria/
Primary olfactory cortex

Piriform cortex · EC-hippocampus system (Entorhinal cortex, Hippocampal formation) · Prepyriform area · Periamygdaloid cortex

Stria medullaris → Habenular nuclei

Amygdala → Stria terminalis → Hypothalamus

Medial forebrain bundle → Hypothalamus
Medial olfactory stria

M: OLF

anat, recp

sysi

-

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Look at other dictionaries:

  • olfactory tract — n a tract of nerve fibers in the olfactory lobe on the inferior surface of the frontal lobe of the brain that passes from the olfactory bulb to the olfactory trigone * * * tractus olfactorius …   Medical dictionary

  • Olfactory tubercle — Latin tuberculum olfactorium The olfactory tubercle is a structure involved in Olfaction. It is present in humans, but much smaller than it is in some other animals. It is a frequent subject of research.[1][2] …   Wikipedia

  • olfactory lobe — n a lobe of the brain that rests on the lower surface of a temporal lobe and projects forward from the anterior lower part of each cerebral hemisphere, that is continuous anteriorly with the olfactory nerve, that consists of an olfactory bulb, an …   Medical dictionary

  • Olfactory receptor — Olfactory receptors expressed in the cell membranes of olfactory receptor neurons are responsible for the detection of odor molecules. Activated olfactory receptors are the initial player in a signal transduction cascade which ultimately produces …   Wikipedia

  • Olfactory epithelium — Section of the olfactory mucous membrane. Plan of olfactory neurons …   Wikipedia

  • Olfactory mucosa — Latin pars olfactoria tunicae mucosae nasi The olfactory mucosa is located in the upper region of the nasal cavity and is made up of the olfactory epithelium and the underlying lamina propria, connective tissue containing fibroblasts, blood… …   Wikipedia

  • Olfactory transduction — is a series of events in which odor molecules are detected by olfactory receptors and chemical signals are transformed into electrical signal to the brain where they are perceived as smells.[1] Once ligands (odorant particles) bind to specific… …   Wikipedia

  • Olfactory glands — Section of the olfactory mucous membrane. Latin glandulae olfactoriae Gray s …   Wikipedia

  • olfactory gyrus — n either a lateral or a medial gyrus on each side of the brain by which the olfactory tract on the corresponding side communicates with the olfactory area …   Medical dictionary

  • olfactory trigone — n a triangular area of gray matter on each side of the brain forming the junction of an olfactory tract with a cerebral hemisphere near the optic chiasma * * * trigonum olfactorium …   Medical dictionary

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