A river in Asturias, starting in the Picos de Europa and flowing into the Bay of Biscay

Part of the sphenoid bone in the skull.

(anatomy) The tentorium of the hypophysis, a fold of dura mater extending transversely across the sella and roofing over the hypophysis or pituitary body; it is perforated in its center for the passage of the infundibulum.

(anatomy) A saddle-shaped depression in the sphenoid bone of the skull in humans and other hominids.