Calamus Scriptorius

From WikiCNS

This article has been reviewed by the NeuroWiki Editorial Board

[edit] Definition

The calamus scriptorius is another name for the inferior fovea, the gross structures forming the inferior 1/3 of the floor of the 4th ventricle, just above the obex. It is so named for its similarity to a "nib of a fountain pen." The medial structures of the nib are the hypoglossal nucleus and the lateral structures the vagal nucleus. Inferior to the calamus lies the area postrema and the sensory nuclei of CN X.