Interpeduncular fossa

The interpeduncular fossa is a somewhat rhomboid-shaped area of the base of the brain, limited in front by the optic chiasma, behind by the antero-superior surface of the pons, antero-laterally by the converging optic tracts, and postero-laterally by the diverging cerebral peduncles.[1]

Interpeduncular fossa
Base of brain
Section through superior colliculus showing path of oculomotor nerve (interpeduncular fossa not labeled, but visible at bottom center)
Details
Identifiers
Latinfossa interpeduncularis
NeuroNames489
Anatomical terms of neuroanatomy

The floor of interpeduncular fossa, from behind forward, are the posterior perforated substance, corpora mamillaria, tuber cinereum, infundibulum, and Pituitary Gland.

Contents of interpeduncular fossa include oculomotor nerve, and circle of Willis.

Anatomy

The interpeduncular fossa is located in the posterior portion of the brain, in the brain stem.

It has been found in humans and macaques, but not in rats or mice, showing that this is a relatively new evolutionary region.[2]

Clinical significance

The most common locations for neurocutaneous melanosis have occurred along the interpeduncular fossa, ventral brainstem, upper cervical cord, and ventral lumbosacral cord.[3]

See also

Additional images
  • Human brainstem anterior view
  • Interpeduncular fossa
  • Cerebrum. Deep dissection. Inferior dissection.

References

This article incorporates text in the public domain from page 816 of the 20th edition of Gray's Anatomy (1918)

  1. "Interpeduncular fossa". IMAIOS. Retrieved 2019-04-03.
  2. "BrainInfo". braininfo.rprc.washington.edu. Retrieved 2019-04-03.
  3. Islam, Monica P. (2015). "Neurocutaneous melanosis". Neurocutaneous Syndromes. Handbook of Clinical Neurology. 132. pp. 111–7. doi:10.1016/B978-0-444-62702-5.00007-X. ISBN 978-0-444-62702-5. PMID 26564074.
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