Between the peduncles is the interpeduncular fossa, which is a cistern filled with cerebrospinal fluid.
2.
The central branches supply the interior of the circle of Willis, more specifically, the Interpeduncular fossa.
3.
Other axons arising from these cells descend through the medial forebrain bundle to terminate in a region dorsal to the interpeduncular nucleus.
4.
By way of the fasciculus retroflexus ( habenulointerpeduncular tract ) it projects to the interpeduncular nucleus and other paramedian cell groups of the midbrain tegmentum.
5.
The medial habenula sends outputs of glutamate, substance P and acetylcholine to the periaqueductal gray via the interpeduncular nucleus as well as to the pineal gland.
6.
The two other principal cisterns are the " pontine cistern " located between the pons and the medulla, and the " interpeduncular cistern " located between the cerebral peduncles.
7.
Most of its fibers are, however, directed downward and form a bundle, the fasciculus retroflexus of Meynert, which passes medial to the red nucleus, and, after decussating with the corresponding fasciculus of the opposite side, ends in the interpeduncular ganglion.
8.
The basal vein passes backward around the cerebral peduncle, and ends in the internal cerebral vein ( vein of Galen ); it receives tributaries from the interpeduncular fossa, the inferior horn of the lateral ventricle, the hippocampal gyrus, and the mid-brain.
9.
Cogenital Vermian Hypoplasia ( CVH ) in COACH syndrome was accompanied by elongation of the superior cerebellar peduncles and a deep interpeduncular fossa, all features that constitute the molar tooth sign ( MTS ), the key feature of Joubert syndrome and related disorders ( JSRD ).
10.
Most of the trigonum habenul?s fibers are, however, directed downward and form a bundle, the fasciculus retroflexus of Meynert, which passes medial to the red nucleus, and, after decussating with the corresponding fasciculus of the opposite side, ends in the interpeduncular nucleus.
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