foramen ovale

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 [fo-ra´men] (pl. fora´mina) (L.)
a natural opening or passage, especially one into or through a bone.
aortic foramen aortic hiatus.
apical foramen an opening at or near the apex of the root of a tooth.
auditory foramen, external the external acoustic meatus.
auditory foramen, internal the passage for the auditory (vestibulocochlear) and facial nerves in the petrous part of the temporal bone.
cecal foramen (foramen cae´cum)
1. a blind opening between the frontal crest and the crista galli.
2. a depression on the dorsum of the tongue at the median sulcus.
condyloid foramen, anterior hypoglossal canal.
condyloid foramen, posterior condylar canal.
epiploic foramen omental foramen.
ethmoidal foramina, fora´mina ethmoida´lia small openings in the ethmoid bone at the junction of the medial wall with the roof of the orbit, the anterior transmitting the nasal branch of the ophthalmic nerve and the anterior ethmoid vessels, the posterior transmitting the posterior ethmoid vessels.
incisive foramen one of the openings of the incisive canals into the incisive fossa of the hard palate.
interventricular foramen a passage from the third to the lateral ventricle of the brain.
intervertebral foramen a passage for a spinal nerve and vessels formed by notches on the pedicles of adjacent vertebrae.
jugular foramen an opening formed by the jugular notches of the temporal and occipital bones.
foramen mag´num a large opening in the anterior inferior part of the occipital bone, between the cranial cavity and spinal canal.
mastoid foramen an opening in the temporal bone behind the mastoid process.
foramen of Monro interventricular foramen.
obturator foramen the large opening between the pubic bone and the ischium.
omental foramen the opening connecting the greater and the lesser peritoneal sacs, situated below and behind the porta hepatis; called also epiploic foramen.
optic foramen optic canal.
foramen ova´le
1. the septal opening in the fetal heart that provides a communication between the atria; it normally closes at birth. Failure to close results in an atrial septal defect.
2. an aperture in the great wing of the sphenoid for vessels and nerves.
The fully developed embryonic heart showing the foramen ovale and ductus arteriosus. From Copstead and Banasik, 2000.
petrosal foramen, foramen petro´sum a small opening sometimes present behind the foramen ovale for transmission of the lesser petrosal nerve.
foramen rotun´dum a round opening in the great wing of the sphenoid for the maxillary branch of the trigeminal nerve.
sacral foramina, anterior eight passages (four on each side) on the pelvic surface of the sacrum for the anterior branches of the sacral nerves.
sacral foramina, posterior eight passages (four on each side) on the dorsal surface of the sacrum for the posterior branches of the sacral nerves.
Scarpa's foramen an opening behind the upper medial incisor, for the nasopalatine nerve.
sciatic foramen either of two openings (the greater and smaller sciatic foramina), formed by the sacrotuberal and sacrospinal ligaments in the sciatic notch of the hip bone.
sphenopalatine foramen a space between the orbital and sphenoidal processes of the palatine bone, opening into the nasal cavity and transmitting the sphenopalatine artery and the nasal nerves.
spinous foramen a hole in the great wing of the sphenoid for the middle meningeal artery.
supraorbital foramen passage in the frontal bone for the supraorbital vessels and nerve; often present as a notch bridged only by fibrous tissue.
thebesian foramina minute openings in the walls of the right atrium through which the smallest cardiac veins (thebesian veins) empty into the heart.
transverse foramen the passage in either transverse process of a cervical vertebra that, in the upper six vertebrae, transmits the vertebral vessels.
vena cava foramen an opening in the diaphragm for the inferior vena cava and some branches of the right vagus nerve.
foramen veno´sum an opening occasionally found medial to the foramen ovale of the sphenoid, for the passage of a vein from the cavernous sinus.
vertebral foramen the large opening in a vertebra formed by its body and its arch.
foramen of Vesalius foramen venosum.
Weitbrecht's foramen a foramen in the capsule of the shoulder joint.
foramen of Winslow epiploic foramen.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

o·val fo·ra·men

1. a large oval opening in the base of the greater wing of sphenoid bone, transmitting the mandibular division of the trigeminal nerve and a small meningeal artery;
2. valvular incompetence of the oval foramen of the heart; a condition contrasting with probe patency of the oval foramen in that the oval foramen valve has abnormal perforations in it, or is of insufficient size to afford adequate valvular action at the foramen ovale prenatally, or effect a complete closure postnatally.
Farlex Partner Medical Dictionary © Farlex 2012

foramen ovale

(ō-văl′ē, -vā′lē, -vä′-)
An opening in the septum between the right and left atria of the heart, present in the fetus but usually closed soon after birth.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

fo·ra·men o·va·le

, oval foramen (fōr-ā'mĕn ō-vā'lē, ō'văl) [TA]
1. The oval opening in the septum secundum in the embryonic and fetal heart; the persistent part of the septum primum acts as a valve for this interatrial communication during fetal life and normally postnatally becomes fused to the septum secundum to close it.
2. [TA] A large oval opening in the base of the greater wing of the sphenoid bone, transmitting the mandibular nerve and a small meningeal artery;
Synonym(s): Botallo foramen.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

foramen ovale

A valve-like opening in the inner wall (septum) between the right and left upper chambers (atria) of the heart of the fetus. Before birth, about three quarters of the blood returning from the body to the right side of the heart is shunted through the foramen ovale to the left side. After birth, the pressure on the left side rises and the foramen valve closes. Soon it fuses shut.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

foramen ovale

an embryonic opening in the septum that divides the left and right atria of the mammalian heart, providing a bypass to the lung circulation. Failure to close the aperture at birth can lead to a BLUE BABY condition.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Echocardiographic evaluation of patent foramen ovale prior to device closure.
We have found increased frequency of foramen ovale on the left side compared to the right side.
Caption: Figure 1: Foramen ovale flow and pulsatility index assessment: echocardiography of fetus at 33 weeks with intrauterine growth restriction.
Henninger, "Prevalence of pelvic vein pathology in patients with cryptogenic stroke and patent foramen ovale undergoing MRV pelvis," Cerebrovascular Diseases, vol.
Lamy et al., "Recurrent cerebrovascular events associated with patent foramen ovale, atrial septal aneurysm, or both," New England Journal of Medicine, vol.
Patent foramen ovale and cryptogenic stroke in older patients.
Prothrombin G20210A mutation, but not factor V Leiden, is a risk factor in patients with persistent foramen ovale and otherwise unexplained cerebral ischemia.
If noninvasive ventilatory support is utilized, providers should consider using minimal pressure settings (i.e., only enough to overcome device resistance) to reduce intrathoracic pressure which might increase leftto-right shunt and subsequently predispose to paradoxical embolism in patients with a patent foramen ovale. Furthermore, whether ventilation occurs via invasive or noninvasive means, reexpansion barotrauma may be a contributory factor in decompression illness, and thus practitioners should minimize peak pressures to any extent possible.
Hase, "A suspected case of paradoxical renal embolism through the patent foramen ovale," Clinical and Experimental Nephrology, vol.
The diagnosis of postpneumonectomy syndrome or platypnea-orthodeoxia syndrome was ruled out in this patient (no dyspnea in the upright position and absence of a patent foramen ovale).
Subsequent echocardiography done did not reveal any structural abnormality, suggesting closure of the patent foramen ovale and the patent ductus arteriosus.
His transthoracic echocardiogram demonstrated a large highly mobile elongated mass consistent with thrombus (asterisk Figure 1(a)) in the right atrium which crosses the interatrial septum, presumably through a patent foramen ovale (arrow Figure 1(a)) into the left atrium.