=====Diaphragma sellae=====
{{ ::diaphragmasellae.png|}} 

The [[diaphragma]] sellae or sellar [[diaphragm]] is a flat piece of [[dura mater]] (with a circular hole allowing the vertical passage of the [[pituitary stalk]]). It retains the [[pituitary gland]] beneath it in the fossa hypophyseos as it almost completely roofs the fossa hypophyseos of the [[sella turcica]].

It has a posterior boundary at the [[dorsum sellae]] and an anterior boundary at the [[tuberculum sellae]] along with the two small eminences (one on either side) called the [[middle clinoid process]]es. The diaphragma sellae is innervated by the first division of the cranial [[trigeminal nerve]].