| foramen | <anatomy> A small opening, perforation, or orifice; a fenestra. Foramen of Monro, the opening connecting the sac of the omentum with the general cavity of the peritoneum. Origin: L, fr. Forare to bore, pierce. (04 Apr 1998) |
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| foramen apicis dentis | The opening at the apex of the root of a tooth that gives passage to the nerve and blood vessels. Synonym: foramen apicis dentis, apical dental foramen, root foramen. (05 Mar 2000) |
| foramen bursae omentalis majoris | <anatomy, embryology> A foramen produced by two folds of peritoneum, that covering the common/proper hepatic artery on the right and that covering the left gastric artery on the left, which encroach upon and constrict the omental bursa. It forms a communication between the superior recess of the lesser sac which lies above it and the remainder of the omental bursa. (12 Sep 2002) |
| foramen caecum linguae | <anatomy> A median pit on the dorsum of the posterior part of the tongue, from which the limbs of a V-shaped furrow run forward and outward; it is the site of origin of the thyroid gland and subsequent thyroglossal duct in the embryo. Synonym: foramen caecum linguae, blind foramen of the tongue, caecal foramen of the tongue, Morgagni's foramen, pleuroperitoneal foramen. (05 Mar 2000) |
| foramen caecum medullae oblongatae | <anatomy> A small triangular depression at the lower boundary of the pons that marks the upper limit of the median fissure of the medulla oblongata. Synonym: foramen caecum posterius, Vicq d'Azyr's foramen. (05 Mar 2000) |
| foramen caecum of frontal bone | <anatomy> Blind or caecal foramen of the frontal bone; the blind foramen formed immediately anterior to the crista galli by a notch at the lower end of the frontal crest and its articulation with the ethmoid bone. It is insignificant postnatally, but gives passage to vessels during development. Synonym: foramen caecum ossis frontalis, blind foramen of frontal bone, caecal foramen of frontal bone. (05 Mar 2000) |
| foramen caecum of tongue | <anatomy> A median pit on the dorsum of the posterior part of the tongue, from which the limbs of a V-shaped furrow run forward and outward; it is the site of origin of the thyroid gland and subsequent thyroglossal duct in the embryo. Synonym: foramen caecum linguae, blind foramen of the tongue, caecal foramen of the tongue, Morgagni's foramen, pleuroperitoneal foramen. (05 Mar 2000) |
| foramen caecum ossis frontalis | <anatomy> Blind or caecal foramen of the frontal bone; the blind foramen formed immediately anterior to the crista galli by a notch at the lower end of the frontal crest and its articulation with the ethmoid bone. It is insignificant postnatally, but gives passage to vessels during development. Synonym: foramen caecum ossis frontalis, blind foramen of frontal bone, caecal foramen of frontal bone. (05 Mar 2000) |
| foramen caecum posterius | <anatomy> A small triangular depression at the lower boundary of the pons that marks the upper limit of the median fissure of the medulla oblongata. Synonym: foramen caecum posterius, Vicq d'Azyr's foramen. (05 Mar 2000) |
| foramen costotransversarium | An opening between the neck of a rib and the transverse process of a vertebra, occupied by the costotransverse ligament. Synonym: foramen costotransversarium. (05 Mar 2000) |
| foramen diaphragmatis sellae | <anatomy> A hole in the centre of the diaphragm of the sella turcica giving passage to the infundibulum of the hypothalamus. (05 Mar 2000) |
| foramen epiploicum | <anatomy> An alternate term for epiploic foramen. (05 Mar 2000) |
| foramen ethmoidale | Either of two foramina formed by grooves on either edge of the ethmoidal notch of the frontal bone, and completed by similar grooves on the ethmoid bone: anterior ethmoidal foramen, located in an anterior position; posterior ethmoidal foramen located in a posterior position. Synonym: foramen ethmoidale. (05 Mar 2000) |
| foramen frontale | An occasional small opening in the supraorbital margin of the frontal bone medial to the supraorbital foramen. Synonym: foramen frontale. (05 Mar 2000) |
| foramen incisivum | One of several (usually four) openings of the incisive canals into the incisive fossa. Synonym: foramen incisivum, incisor foramen, Stensen's foramen. (05 Mar 2000) |