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Interpeduncular fossa | |
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Details | |
Identifiers | |
Latin | fossa interpeduncularis |
NeuroNames | 489 |
Anatomical terms of neuroanatomy |
The interpeduncular fossa is a deep depression of the ventral surface of the midbrain: 456 between the two crura cerebri.: 456
It has been found in humans and macaques, but not in rats or mice, showing that this is a relatively new evolutionary region.
The interpeduncular fossa is a somewhat rhomboid-shaped area of the base of the brain.
The lateral wall of the interpeduncular fossa bears a groove - the oculomotor sulcus - from which rootlets of the oculomotor nerve emerge from the substance of the brainstem: 456 and aggregate into a single fascicle.: 456
The ventral tegmental area lies at the depth of the interpeduncular fossa.: 459
The interpeduncular fossa is 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.
The floor of interpeduncular fossa, from behind forward,[citation needed] are the posterior perforated substance, corpora mamillaria, tuber cinereum, infundibulum, and pituitary gland.[citation needed]
Contents of interpeduncular fossa include oculomotor nerve, and circle of Willis.[citation needed]
The basal veins pass alongside the interpeduncular fossa before joining the great cerebral vein.: 422
The most common locations for neurocutaneous melanosis have occurred along the interpeduncular fossa, ventral brainstem, upper cervical cord, and ventral lumbosacral cord.
This article incorporates text in the public domain from page 816 of the 20th edition of Gray's Anatomy (1918)
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