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II. Osteology. 5d. The Interior of the Skull. Gray, Henry. 1918. Anatomy of the Human Body. These furrows begin near the foramen spinosum, and the anterior runs forward and upward to the sphenoidal angle of the parietal, where it is sometimes converted into a bony canal; the posterior runs lateralward and backward across the temporal squama and passes on to the parietal near the middle of its lower border. Lateral to the foramen ovale is the foramen spinosum, for the passage of the middle meningeal vessels, and a recurrent branch from the mandibular nerve. The nerve of the pterygoid canal and a meningeal branch from the ascending pharyngeal artery pierce the layer of fibrocartilage. www.bartleby.com /107/47.html   (4400 words)

Baruch Undergrad. Honors [1991]: Dempsey, M. Cranial Foramina... In Cricetulus the posterior maxillary foramen is absent. In Cricetulus this foramen is in the alisphenoid posteroventral to the sphenofrontal and anteroventral to the root of the zygoma. The foramen is absent in all the dipodoids. newman.baruch.cuny.edu /digital/2000/honors/dempsey_1991/dempsey_1991.htm   (7619 words)

Foramen magnum - Wikipedia, the free encyclopedia In anatomy, the foramen magnum is the large hole in the occipital bone in the base of the skull, through which the medulla oblongata (an extension of the spinal cord) exits the skull vault. In humans the foramen magnum is farther underneath the head than in great apes. Comparisons of the position of the foramen magnum in early hominid species are useful to determine how comfortable a particular species was when walking on two limbs ( bipedality) rather than four. en.wikipedia.org /wiki/Foramen_magnum   (124 words)

II. Osteology. 5a. The Cranial Bones. 1. The Occipital Bone. Gray, Henry. 1918. Anatomy of the Human Body.   (Site not responding. Last check: 2007-11-06) The curved, expanded plate behind the foramen magnum is named the squama; the thick, somewhat quadrilateral piece in front of the foramen is called the basilar part, whilst on either side of the foramen is the lateral portion. From the external occipital protuberance a ridge or crest, the median nuchal line, often faintly marked, descends to the foramen magnum, and affords attachment to the ligamentum nuchæ; running from the middle of this line across either half of the nuchal plane is the inferior nuchal line. The lower division of the cruciate eminence is prominent, and is named the internal occipital crest; it bifurcates near the foramen magnum and gives attachment to the falx cerebelli; in the attached margin of this falx is the occipital sinus, which is sometimes duplicated. www.bartleby.com /107/31.html   (1853 words)

THE JUGULAR FORAMEN LESIONS   (Site not responding. Last check: 2007-11-06) The jugular foramen is located at the posterolateral skull base with its long axis obliquely directed from posterolateral to anteromedial direction and is formed by the petrous temporal bone anterolaterally and by the jugular process of condylar part of the occipital bone postermedially. The right foramen is larger than the left in 68%, equal in 12% and smaller than the left in 20%, possibly due to the difference in the size of the sigmoid sinus and the jugular bulb. On the intracranial side the jugular foramen is related inferior to the porus acoustics and superolateral to the intracranial orifice of the hypoglossal canal. www.thamburaj.com /jugular_foramen_lesions.htm   (6029 words)

DAN Divers Alert Network : Patent Foramen Ovale The foramen ovale is an opening, or communication, between the right atrium and left atrium in the heart. (Foramen is Latin for opening, or aperture; ovale is, appropriately, Latin for oval, indicating the shape of the aperture.) The normal passage of blood in the adult human is from the great veins of the body, through the right atrium into the right ventricle, and then via the pulmonary artery to the lungs. The foramen ovale is initially closed by a "flap valve," similar to a spring-loaded door. www.diversalertnetwork.org /medical/articles/article.asp?articleid=50   (1090 words)

TheFetus.net - Premature closure of the foramen ovale -Jose M. Sierra, MD. Philippe Jeanty, MD, PhD. Eleni Tzachrista, ... Nonimmune hydrops fetalis secondary to premature closure of the foramen ovale. Premature closure of the foramen ovale and congenital pulmonary cystic lymphangiectasis in aortic valve atresia or in severe aortic valve stenosis. Premature closure of the foramen ovale as a cause of intrauterine fetal ascites. www.thefetus.net /page.php?id=891   (1289 words)

Heffez Neurosurgical Associates - Papers   (Site not responding. Last check: 2007-11-06) We have evaluated 28 patients with symptoms consistent with compression of the neuraxis at the foramen magnum and in whom the MRI scan was either reported as normal or showed a degree of tonsillar ectopia insufficient to meet the diagnostic criteria for the Chiari type1 malformation. For the purpose of determining the position of the cerebellar tonsils the lower lip of the foramen magnum was defined as extending from the lowest cortical bone of the clivus anteriorly (basion) to the lowest cortical bone at the opistion posteriorly on the mid-sagittal MRI image(3,6). The rim of the foramen magnum was resected laterally as far as the atlanto-occipital joint bilaterally. www.heffezneurosurgical.com /chiaripaperweb.jsp   (4498 words)

Dorlands Medical Dictionary guae, [TA]   foramen cecum of tongue : a depression on the dorsum of the tongue at the end of the median sulcus, representing the remains of the superior end of the thyroglossal duct of the embryo. Spöndel's foramen,   a small transient foramen in the cartilaginous base of the developing skull between the ethmoid bone and the lesser wings of the sphenoid. Weitbrecht's foramen,   an opening in the capsule of the shoulder joint through which passes the synovial membrane to the bursa that lines the under surface of the subscapularis muscle. www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_f_12zPzhtm   (3166 words)

Patent Foramen Ovale Closure May Reduce Migraine Attacks Patients with a history of stroke and a patent foramen ovale have a higher prevalence of migraine with aura than the general population, and after percutaneous patent foramen ovale closure for stroke prevention purposes, they report a reduced frequency of migraine attacks, a new study showed. Patent foramen ovale is already implicated as a cause of stroke, particularly in young people, and percutaneous closure of patent foramen ovale is now done for secondary stroke prevention in people in whom other causes of stroke have been ruled out. After patent foramen ovale closure, the frequency of headache attacks was significantly reduced in both types of migraine: in migraine with aura by 54% and in migraine without aura by 62%. www.neurologyreviews.com /feb04/nr_feb04_foramen.html   (889 words)

Foramen. Foramen is an irregularly variable star, 1 to 7.4, reddish, and lies in the Carina (Keel) subdivision of Argo, invisible from north of the 30th parallel. Babylonian inscriptions seem to refer to a star, noticeable from occasional faintness in its light, believed to be this star Foramen and to be one of the temple stars associated with Ea or Ia of Eriidhu the "Lord of the Waves", otherwise known as Oannes, the mysterious human fish and greatest god of the kingdom. Oannes was known as the teacher of early man in all knowledge; and in mythology he was the creator of man and the father of Tammuz and Ishtar, themselves associated with other stars and sky figures. www.winshop.com.au /annew/Foramen.html   (631 words)

eMedicine - Patent Foramen Ovale : Article by Sandy Shah, DO In utero, the foramen ovale serves as a physiologic conduit for right-to-left shunting. The Mayo Clinic autopsy study revealed that the size of a patent foramen ovale increases from a mean of 3.4 mm in the first decade to 5.8 mm in the 10th decade of life, as the valve of fossa ovalis stretches with age. With increasing evidence that patent foramen ovale is the culprit in paradoxical embolic events, the relative importance of the anomaly is being reevaluated. www.emedicine.com /med/topic1766.htm   (2329 words)

Foramen Foramen magnum In spinal cord) exits the skull vault. In humans the foramen magnum is farther underneath the head than i... Foramen ovale Two structures in the human body are called foramen ovale, meaning circular hole. www.brainyencyclopedia.com /topics/foramen.html   (46 words)

Closure Devices for Patent Foramen Ovale and Atrial Septal Defects The foramen ovale, a component of fetal cardiovascular circulation, consists of a communication between the right and left atrium that functions as a vascular bypass of the uninflated lungs. Prior to birth the foramen ovale is held open by the large flow of blood into the left atrium from the inferior vena cava. Closure of patent foramen ovale using a transcatheter approach with an FDA-approved device may be considered medically necessary in patients with a history of cryptogenic stroke. www.regence.com /trgmedpol/surgery/sur105.html   (3254 words)

AllRefer Health - Patent Foramen Ovale (PFO) PFO is the persistence of a fetal opening between the left and right atria (upper chambers) of the heart. The foramen ovale normally closes soon after the infant is born. The foramen ovale may remain open in as many as 1 out of 5 people. health.allrefer.com /health/patent-foramen-ovale-info.html   (350 words)

Re: Patent Foramen Ovale   (Site not responding. Last check: 2007-11-06) Patent Foramen Ovale -- vicki -- Thursday, 30 December 2004, at 2:09 p.m. Re: Patent Foramen Ovale -- Maureen -- Thursday, 30 December 2004, at 10:56 p.m. Re: Patent Foramen Ovale -- Colin -- Thursday, 30 December 2004, at 3:36 p.m. www.differentstrokes.co.uk /cgi-bin/config.pl?read=12510   (275 words)

Fetal Circulation The closure of the fetal vessels and the foramen ovale is initially a functional change; later anatomic closure results from proliferation of endothelial and fibrous tissues. pulmonary stenosis or atresia), blood is shunted through the foramen ovale into the left ventricle, producing cyanosis, a dark bluish coloration of the skin and mucous membranes resulting from deficient oxygenation of the blood. Results from incomplete adhesion between the original flap of the valve of the foramen ovale and the septum secundum after birth. mcb.berkeley.edu /courses/mcb135e/fetal.html   (1165 words)

Peak Systolic and Diastolic CSF Velocity in the Foramen Magnum in Adult Patients with Chiari I Malformations and in ... the foramen magnum are increased in patients with Chiari I malformations. MR imaging in the axial plane at the foramen magnum. elevations of peak systolic velocity in the CSF in the foramen www.ajnr.org /cgi/content/full/24/2/169   (4183 words)

eMedicine - Atrial Septal Defect, Patent Foramen Ovale : Article by Michael A Portman, MD   (Site not responding. Last check: 2007-11-06) Pathophysiology: The foramen ovale is an interatrial communication that permits blood from the inferior vena cava to freely enter the left atrium in utero. No physical findings clearly indicate a patent foramen ovale without an associated congenital heart defect; however, the presence of a patent foramen ovale with right-to-left shunting should be considered in a patient with generalized cyanosis. Transfer of patients with patent foramen ovale is only likely to be indicated for surgical closure or transcatheter device closure of the patent foramen ovale in patients with problematic right-to-left shunting. www.emedicine.com /ped/topic2494.htm   (2350 words)

The suboccipital cavernous sinus   (Site not responding. Last check: 2007-11-06) h, is stretched at the foramen magnum between the inferior border and the posterior surface of the occipital bone and the posterior arch of the atlas. In the transverse foramen of the atlas, a fibrous periosteal ring, herein described as the lateral ring, surrounds the venous compartment that cushions the V has been dissected from the transverse foramen of the axis to its dural entry, the posterior wall of the transverse foramen of the atlas is opened using a diamond drill. www.c3.hu /~mavideg/jns/1-6-p2.html   (6197 words)

Patent foramen ovale   (Site not responding. Last check: 2007-11-06) If you clearly desire to discover more about info related to patent foramen ovale, then you need to be steadfast and allocate the time obligatory to uncover the chief sources to gather your news. The patent foramen ovale resources at hand since the internet was made available has improved in merit. The unequaled areas to turn up precisely the variety of patent foramen ovale help you are looking for is here on the net by way of the different search engines available. www.patents-and-inventions.com /patent-foramen-ovale.html   (499 words)

Percutaneous closure of the patent foramen ovale for the prevention of cerebral embolic stroke A patent foramen ovale is the persistence of a hole (the foramen ovale) in the wall (septum) between the right atrium and left atrium of the heart. The foramen ovale usually closes spontaneously after birth; however, in as many as 1 out of 4 people, the foramen ovale does not close completely and it remains patent throughout life. Overview of percutaneous closure of patent foramen ovale for the prevention of cerebral embolic stroke www.nice.org.uk /page.aspx?o=90648   (319 words)

Contemporary Management of Patent Foramen Ovale -- Meier and Lock 107 (1): 5 -- Circulation The cranial part of the interatrial septum is primarily formed by the septum secundum on the right side, with a remnant of the septum primum close to the roof of the left atrium. There is no shunt at the patent foramen ovale (arrow) as the valve mechanism functions even with the catheter across it. Patent foramen ovale is an important predictor of adverse outcome in patients with major pulmonary embolism. circ.ahajournals.org /cgi/content/full/107/1/5   (3322 words)

Patent Foramen Ovale (PFO), AGA Medical Corp.   (Site not responding. Last check: 2007-11-06) The foramen ovale should grow closed at birth or shortly afterward. Patent foramen ovale is suspected as a pathway for blood clots which can potentially lead to a stroke or transient ischemic attack (TIA). If a Patent Foramen Ovale is found in conjunction with an unknown source of stroke, you may be referred for medical treatment or AMPLATZER device closure of your PFO. www.amplatzer.com /us/patient&family/pfo_defect.html   (334 words)

Patent Foramen Ovale   (Site not responding. Last check: 2007-11-06) The foramen ovale is frequently open in infants providing an access to the left side of the heart... Percutaneous closure of patent foramen ovale reduces the frequency of migrai... Patent foramen ovale closure in patients with transient ischemia attack/stroke. www.patentsdepo.com /patentforamenovale   (1294 words)

Spencer Technologies Reference - Patent Foramen Ovale Prevalence of patent foramen ovale in patients with stroke. Patent foramen ovale and decompression sickness in divers. Patent foramen ovale can be assessed by transcranial Doppler. www.spencertechnologies.com /reference/pfo.htm   (220 words)

Foramen Ovale Patent   (Site not responding. Last check: 2007-11-06) In the hospital he was found to have a PFO [= patent foramen ovale] and also Factor V Leiden. Foramen Migraine Ovale Patent If you're looking for information on foramen migraine ovale patent or if you have an invention, then you've come to the right place. A patent foramen ovale (PFO) is a hole between the upper chambers (or atria) of the heart. www.patents-searches.com /patent5/ForamenOvalePatent   (966 words)

Patent Foramen Ovale   (Site not responding. Last check: 2007-11-06) Every year, hundreds of divers suffer from decompression sickness, and almost half of those divers have not committed any mistake, and have been diving according to the profiles imposed by the currently accepted decompression tables or computers. Patent Foramen Ovale is not a disease, but only a remains of the anatomy of the heart before birth (picture). Before being born, the lungs have no function in oxygenating the blood (because the fetus is immersed in water), and all the oxygen is transported via the umbilical blood vessels, from the placenta. www.daneurope.org /eng/cadintro.htm   (1271 words)

Patent Foramen Ovale Closure   (Site not responding. Last check: 2007-11-06) The Foramen Ovale is an opening between the upper chambers of the heart called the right and left atria. If this happens, the result is called a patent foramen ovale or PFO. Information on this site is for educational use only and should not be used in place of professional medical advice. www.ihimontana.org /cardiology-patent-foramen-ovale-closure.php   (534 words)

NEJM -- Recurrent Cerebrovascular Events Associated with Patent Foramen Ovale, Atrial Septal Aneurysm, or Both Closure of patent foramen ovale: is the case really closed as well?. Patent foramen ovale and the risk of stroke: smoking gun guilty by association?. Transcatheter closure of patent foramen ovale (PFO) in patients with paradoxical embolism: Periprocedural safety and mid-term follow-up results of three different device occluder systems. content.nejm.org /cgi/content/abstract/345/24/1740   (1762 words)

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