See Also: ostium secundum(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
secundum(medicine)
secundum(dictionary)
septum secundum(medicine)
interatrial foramen secundum(medicine)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
ostium(dictionary)
ostium(medicine)
ostium pyloricum(medicine)

ostium secundum (medicine)


ostium secundum -->
interatrial foramen secundum


A secondary opening appearing in the upper part of the septum primum in the sixth week of embryonic life, just prior to the closure of the interatrial foramen primum.

Synonym: ostium secundum, secondary interatrial foramen.