Olfactory tract

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

Olfactory tract
Scheme of rhinencephalon. (Olfactory tract visible at left.)
Details
SystemOlfactory system
LocationBrain
Identifiers
Latintractus olfactorius
NeuroNames283
NeuroLex IDbirnlex_1663
TA98A14.1.09.431
TA25539
FMA77626
Anatomical terms of neuroanatomy

It lies in the olfactory sulcus on the inferior surface of the frontal lobe, and divides posteriorly into two striae, 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.[1]

Destruction to the olfactory tract results in ipsilateral anosmia.

Additional images
  • Base of brain.
  • Plan of olfactory neurons.
  • Human brainstem anterior view
  • Olfactory nerve
  • 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

References
  1. Allison, A. C. (1954). "The secondary olfactory areas in the human brain". Journal of Anatomy, 88 (Pt 4), 481–488.2.

This article incorporates text in the public domain from page 826 of the 20th edition of Gray's Anatomy (1918)

  • "1-4". Cranial Nerves. Yale School of Medicine. Archived from the original on 2016-03-03.
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