<prompt> Which of the following supplies the pineal gland?Posterior choroidal aeriesTuberothalamicRecurrent aery of HeubnerLenticulostriate aery  <response>: Pineal gland is present posterior to midbrain so if tumor is in pineal gland ,it may lt dorsal mid brain syndrome as it would press on the midbrain from behind. MCAMiddle Cerebral Aery not a pa of Circle of Willis PCA Posterior Cerebral Aery P1,P2 and 10-11 Post choroidal aeries P1 supplies- Midbrain P2 supplies -PCA Post choroidal aeries supplies -Pineal gland 