The inferior vena caval orifice is the aperture through which the inferior vena cava returns blood from the lower half of the body to the right atrium. It is situated in the sinus venarum part of the chamber and its relations are:
Anteroinferiorly, the orifice is lined by a semi-lunate valve - the valve of the inferior vena cava.
Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.