The depressed area between the
crura is termed the
interpeduncular fossa
The interpeduncular fossa is a deep depression of the ventral surface of the midbrain between the two crura cerebri.
It has been found in humans and macaques, but not in rats or mice, showing that this is a relatively new evolutionary region.
A ...
, and consists of a layer of gray matter, the posterior perforated substance, which is pierced by small apertures for the transmission of
blood vessels; its lower part lies on the
ventral
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position prov ...
aspect of the medial portions of the
tegmenta, and contains a nucleus named the
interpeduncular ganglion; its upper part assists in forming the floor of the
third ventricle
The third ventricle is one of the four connected ventricles of the ventricular system within the mammalian brain. It is a slit-like cavity formed in the diencephalon between the two thalami, in the midline between the right and left lateral ...
.
See also
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Anterior perforated substance
Additional images
File:Human brainstem anterior view 2 description.JPG, Human brainstem anterior view
References
External links
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Central nervous system
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