See Also: primary interatrial foramen(medicine)
interatrial foramen secundum(medicine)
secondary interatrial foramen(medicine)
interatrial foramen primum(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
interatrial(medicine)
interatrial septum(medicine)
Gerdy's interatrial loop(medicine)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Orthomolecular medicine (orthomolecular nutritional medicine, orthomolecular therapy)(health)

primary interatrial foramen (medicine)


primary interatrial foramen -->
interatrial foramen primum


In the embryonic heart, the temporary opening between right and left atria situated between the lower margin of the septum primum and the atrioventricular canal cushions, in an adult heart, the abnormal persistence of the so-named communication which is normal in young embryos.

Synonym: foramen subseptale, ostium primum, primary interatrial foramen.