Olfactory tract

Brain: Olfactory tract
Scheme of rhinencephalon. (Olfactory tract visible at left.)
Latin	tractus olfactorius
Gray's	subject #189 826
NeuroNames	hier-265
Dorlands/Elsevier	t_15/12817042

The olfactory tract 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 and a lateral.

• The lateral olfactory stria is directed across the lateral part of the anterior perforated substance and then bends abruptly medialward toward the uncus of the hippocampal gyrus.

• The medial olfactory stria turns medialward behind the parolfactory area and ends in the subcallosal gyrus; in some cases a small intermediate stria is seen running backward to the anterior perforated substance.

Additional images

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  The arteries of the base of the brain.

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

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  Base of brain.

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  Plan of olfactory neurons.

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  The pterygopalatine ganglion and its branches.

External links

• Atlas of anatomy at UMich n1a2p13
• Cranial Nerves at Yale 1-4
• Roche Lexicon - illustrated navigator, at Elsevier 13048.000-1
• Diagram at thebrain.mcgill.ca

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.