Subfornical organ
Organum subfornicale
Definition
The subfornical organ is a circumventricular structure located ventrally to the fornix, at the rostral end of the third ventricle of the diencephalon.
It is part of the regions where the blood-brain barrier is reduced, allowing sensory and secretory functions.
References
Evans HE, de Lahunta A. Miller’s anatomy of the dog, 4th edition, Elsevier Saunders, St Louis, 2012.