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Interpeduncular cistern

The interpeduncular cistern is the subarachnoid cistern situated between the dorsum sellae (anteriorly) and the two cerebral peduncles at the front of the midbrain. Its roof is represented by the floor of the third ventricle. Its floor is formed by the arachnoid membrane extending between the temporal lobes of either side. Anteriorly, it extends to the optic chiasm.

Anatomy
Contents The cistern contains: • the posterior portion of the circle of Willis: • (the origin of the) posterior thalamo-perforating arteries, • (part of the) superior cerebellar artery, • basal vein, • (proximal portion of the) anterior ponto-mesencephalic vein, • (proximal portion of the) oculomotor nerves (CN III), • trochlear nerves (CN IV). == References ==
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