Olfactory tract
| Olfactory tract | |
|---|---|
 Scheme of rhinencephalon. (Olfactory tract visible at left.) | |
| Details | |
| Identifiers | |
| Latin | tractus olfactorius |
| NeuroNames | hier-265 |
| NeuroLex ID | Olfactory tract |
| TA | A14.1.09.431 |
| FMA | 77626 |
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. Fibers of the olfactory tract appear to end in the antero-lateral part of the olfactory tubercle, the dorsal and external parts of the anterior olfactory nucleus, the frontal and temporal parts of the prepyriform area, the cortico-medial group of amygdaloid nuclei and the nucleus of the stria terminalis. <Allison, A. C. (1954). The secondary olfactory areas in the human brain. Journal of Anatomy, 88(Pt 4), 481–488.2.>
Destruction to the olfactory tract results in ipsilateral anosmia.
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
Cerebrum.Inferior view.Deep dissection
Spinal cord. Brachial plexus. Cerebrum.Inferior view.Deep dissection.
Spinal cord. Brachial plexus. Cerebrum.Inferior view.Deep dissection.
Cerebrum. Optic and olfactory nerves.Inferior view. Deep dissection.
Cerebrum.Inferior view. Deep dissection.
Cerebrum. Inferior view.Deep dissection
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
External links
- Atlas image: n1a2p13 at the University of Michigan Health System
- Cranial Nerves at Yale 1-4
- Anatomy diagram: 13048.000-1 at Roche Lexicon - illustrated navigator, Elsevier
- Diagram at thebrain.mcgill.ca