Olfactory tract

Olfactory tract

Scheme of rhinencephalon. (Olfactory tract visible at left.)
Latin tractus olfactorius
NeuroNames hier-265
NeuroLex ID Olfactory tract
TA A14.1.09.431
FMA 77626

Anatomical terms of neuroanatomy

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


This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

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