Olfactory tract

Olfactory tract
Scheme of rhinencephalon. (Olfactory tract visible at left.)
Details
System	Olfactory system
Location	Brain
Identifiers
Latin	tractus olfactorius
NeuroNames	283
NeuroLex ID	birnlex_1663
TA98	A14.1.09.431
TA2	5539
FMA	77626
Anatomical terms of neuroanatomy

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.

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.

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

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

External links

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