Interpeduncular fossa
| 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 | |
| Latin | fossa interpeduncularis |
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| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of neuroanatomy [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The interpeduncular fossa is a deep depression of the ventral surface of the midbrain between the two cerebal crura.[1][2][3] It has been found in humans and macaques, but not in rats or mice, showing that this is a relatively new evolutionary region.[4]
Structure
[edit | edit source]The interpeduncular fossa is a somewhat rhomboid-shaped area of the base of the brain.[5]
Features
[edit | edit source]The lateral wall of the interpeduncular fossa bears a groove - the oculomotor sulcus - from which[6] rootlets of the oculomotor nerve emerge from the substance of the brainstem and aggregate into a single fascicle.[3][6]
Anatomical relations
[edit | edit source]The ventral tegmental area lies at the depth of the interpeduncular fossa.[3]
Boundaries
[edit | edit source]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.[5]
The floor of interpeduncular fossa, from behind forward,[citation needed] are the posterior perforated substance,[2] corpora mamillaria, tuber cinereum, infundibulum, and pituitary gland.[citation needed]
Contents
[edit | edit source]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.[7]
Clinical significance
[edit | edit source]The most common locations for neurocutaneous melanosis have occurred along the interpeduncular fossa, ventral brainstem, upper cervical cord, and ventral lumbosacral cord.[8]
See also
[edit | edit source]Additional images
[edit | edit source]-
Human brainstem anterior view -
Interpeduncular fossa. Cerebrum. Deep dissection. Inferior dissection.
References
[edit | edit source]
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
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External links
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