1.pineal foramen A small opening in the skull roof in the pineal plate of Placoderms and Agnatha and between the frontals in Osteichthyes - the "third eye".
孔盔甲鱼和无颌鱼头盖骨顶部板内小开口;硬骨鱼额骨间小开口-「第三个眼」。
2.Melatonin is a kind of indoleamine hormone synthesized by the pineal gland of the vertebrate,which has extensive biological functions.