<prompt> Which of the following is not pa of epithalamus?Trigonum HabenulaeGeniculate bodiesPineal bodyPosterior commissure  <response>: EPITHALAMUS:It occupies the caudal pa of the roof of the diencephalon and consists of 1.The right and left habenular nuclei,each situated beneath the floor of the corresponding habenular trigone. 2.The pineal body or epiphysis cerebri 3.The habenular commissure 4.The posterior commissure REF.B D Chaurasias human anatomy,Vol.3,Fifth edition 