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FORAMEN
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Irregular inflected form: foramina
I. (noun)
Sense 1
Meaning:
A natural opening or perforation through a bone or a membranous structure
Synonyms:
foramen; hiatus
Classified under:
Hypernyms ("foramen" is a kind of...):
gap; opening (an open or empty space in or between things)
Hyponyms (each of the following is a kind of "foramen"):
foramen of Monro; interventricular foramen; Monro's foramen (the small opening (on both the right and left sides) that connects the third ventricle in the diencephalon with the lateral ventricle in the cerebral hemisphere)
foramen magnum (the large opening at the base of the cranium through which the spinal cord passes)
Context examples:
Example(s): celom, thoracic cavity, lesser sac of peritoneum, cavity of right atrium, lumen of blood vessel, mediastinum, anterior compartment of forearm, intervertebral foramen.
(Body Space, NCI Thesaurus/UWDA)
It originates in the brainstem and passes through the jugular foramen.
(Glossopharyngeal Nerve, NCI Thesaurus)
Cerebrospinal fluid from the lateral ventricles flows into the third ventricle via the foramina of Monroe and exits the third ventricle via the aqueduct of Sylvius.
(Murine Third Ventricle of Brain, NCI Thesaurus)
A sloped depression between the dorsum sellae and foramen magnum at the base of the skull.
(Clivus, NCI Thesaurus)
An irregularly curved cavity that extends from the interventricular foramen to the splenium of the corpus callosum in the brain.
(Body of the Lateral Ventricle, NCI Thesaurus)
A rare genetic brain malformation characterized by displacement of the brain stem and cerebellum through the foramen magnum.
(Arnold-Chiari Malformation, NCI Thesaurus)
The nerve travels from the inner ear, enters the cranial cavity through the internal auditory foramen and joins the brainstem.
(Murine Vestibulocochlear Nerve, NCI Thesaurus)
A cardiopulmonary disorder characterized by systemic arterial hypoxemia secondary to pulmonary hypertension and extrapulmonary right to left shunting across the foramen ovale and ductus arteriosus.
(Persistent Fetal Circulation, NCI Thesaurus)
Representative examples include atrial septal defect, ventricular septal defect, tetralogy of Fallot, and patent foramen ovale.
(Congenital Heart Disease, NCI Thesaurus)
They are separated from each other by the SEPTUM PELLUCIDUM, and each communicates with the THIRD VENTRICLE by the foramen of Monro, through which also the choroid plexuses (CHOROID PLEXUS) of the lateral ventricles become continuous with that of the third ventricle.
(Lateral Ventricle, NLM, Medical Subject Headings)
