From Wikipedia, the free encyclopedia
- For the structure in the thigh, see Fossa ovalis (thigh).
Found in the right atrium of the heart, the fossa ovalis is an embryonic remnant of the foramen ovale, which normally closes shortly after birth. Failure of the foramen ovale to close results in a disorder known as patent foramen ovale.
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| Cardiovascular system - Heart - edit |
| atria (interatrial septum, musculi pectinati) | ventricles (interventricular septum, trabeculae carneae, chordae tendinae, papillary muscle) | valves
base | apex | grooves (coronary/atrioventricular, interatrial, anterior interventricula, posterior interventricular) | surfaces (sternocostal, diaphragmatic) | borders (right, left)
right heart: (vena cavae, coronary sinus) → right atrium (auricle, fossa ovalis, limbus of fossa ovalis, crista terminalis, valve of the inferior vena cava, valve of the coronary sinus) → tricuspid valve → right ventricle (conus arteriosus, moderator band/septomarginal trabecula) → pulmonic valve → (pulmonary artery and pulmonary circulation)
left heart: (pulmonary veins) → left atrium (auricle) → mitral valve → left ventricle → aortic valve (aortic sinus) → (aorta and systemic circulation)
pericardium (sinus) | epicardium | endocardium | myocardium | cardiac skeleton (fibrous trigone, fibrous rings)
conduction system: cardiac pacemaker | Purkinje fibers | bundle of His | SA node | AV node
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