<prompt> Foramen of Monro connectsLateral ventricle to the third ventricleBoth lateral ventricles3rd to the 4th ventricleLateral to the 4th ventricle  <response>: Foramen of Monro connects lateral ventricle to third ventricle The CSF is produced mainly in the lateral ventricles, from where it passes through the interventricular foraminaof Monro into third ventricle.Ref: Clinical Reference - Neuroanatomy Vishram Singh 2nd edition pg 194 