opening in the fetal heart in the septum between the right and left atria; hole in the greater wing of the sphenoid bone that transmits the mandibular branch of the trigeminal (V) nerve
An oval hole in the septum of the foetal heart between the right and left atrium, which normally closes shortly afterbirth. A to B | C to D | E to K | L to P | Q to Z
A natural opening in the septum between the two atria that allows blood to bypass the lungs in the fetal circulation. Failure of the foramen ovale to close leads to a defect in the septum known as a patent foramen ovale or PFO.
The passage for the mandibular (3rd) branch of the trigeminal (Vth) nerve through the medial and posterior part of the greater wing of the sphenoid bone. image
Special opening between the atria of the fetal heart. Normally, the opening closes shortly after birth; if it remains open, it can be repaired surgically.
An opening between the right and left upper chambers of the heart. Closes after birth.
The opening in the skull through which the trigeminal nerve passes on its way into the face.
The opening between the left and right atria of the fetal heart which remains open in about 30% of people, allowing passage of bubbles into the arterial circulation which is believed to cause symptoms of arterial gas embolism.
normal opening between the right and left atria of the fetal heart.
In fetal heart this is a flap valve between the left and right atria that shunts oxygenated blood into the left heart. Closes at birth as lungs inflate with first breath, creating separate left and right atria.
At the base of the skull the foramen ovale (Latin: oval window) is one of the larger of the several holes (the foramina) that transmit nerves through the skull. The foramen ovale is situated in the anterior part of the sphenoid bone, posteriolateral to the foramen rotundum.
In the fetal heart, the foramen ovale allows blood to enter the left atrium from the right atrium. It is one of two shunts, the other being the ductus arteriosus, that allows blood entering the right atrium to bypass the pulmonary circulation. In most individuals, the foramen ovale closes within the first year after birth to form the fossa ovalis.