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Anatomy Brain 3c596437

All of the following form the floor of third ventricle, except

A
Infundibulum
B
Occulomotor nerve
C
Mammillary body
D
Optic chiasma
High-Yield Explanation
Floor of third ventricle is formed from before backward by :Optic chiasmaTuber cinerum & infundibulumMammillary bodiesPosterior perforated substanceTegmentum of midbrain(Ref: Vishram Singh textbook of clinical neuroanatomy second edition pg 137)

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