In anatomy, a foramen (pl. foramina) is any opening. Examples Skull See Foramina of the skull Other the apical foramen is the hole at the tip of the root of a tooth the foramen ovale (heart) is a hole between the venous and arterial sides of the fetal heart the foramen transversarium is one of a pair of openings in each cervical vertebra, in which the vertebral artery travels vertebral foramen, the foramen formed by the anterior segment (the body), and the posterior part, the vertebral arch obtu… (More on Foramen)