oval foramen

(redirected from foramen ovale of heart)

o·val fo·ra·men

1. a large oval opening in the base of the greater wing of sphenoid bone, transmitting the mandibular division of the trigeminal nerve and a small meningeal artery;
2. valvular incompetence of the oval foramen of the heart; a condition contrasting with probe patency of the oval foramen in that the oval foramen valve has abnormal perforations in it, or is of insufficient size to afford adequate valvular action at the foramen ovale prenatally, or effect a complete closure postnatally.

fo·ra·men o·va·le

, oval foramen (fōr-ā'mĕn ō-vā'lē, ō'văl) [TA]
1. The oval opening in the septum secundum in the embryonic and fetal heart; the persistent part of the septum primum acts as a valve for this interatrial communication during fetal life and normally postnatally becomes fused to the septum secundum to close it.
2. [TA] A large oval opening in the base of the greater wing of the sphenoid bone, transmitting the mandibular nerve and a small meningeal artery;
Synonym(s): Botallo foramen.