posterior perforated substance(redirected from substantia perforata posterior)
pos·te·ri·or per·fo·rat·ed sub·stance[TA]
the bottom of the interpeduncular fossa at the base of the midbrain, extending from the anterior border of the pons forward to the mammillary bodies, and containing numerous openings for the passage of perforating branches of the posterior cerebral arteries.
posterior perforated substance
A triangular area forming the floor of the interpeduncular fossa. It lies immediately behind the corpora mammillaria and contains numerous openings for blood vessels.
See also: substance
Malacarne,Michele V.G., Italian surgeon, 1744-1816.
Malacarne pyramid - a lobule on the undersurface of the cerebellum, the posterior portion of the vermis.
Malacarne space - the bottom of the interpeduncular fossa at the base of the midbrain. Synonym(s): posterior perforated substance