Presphenoid bone
Os presphenoidale [prae-]
Definition
The presphenoid bone is the cranial portion of the sphenoid bone, contributing to the formation of the base of the skull. It consists of a body and right and left wings, comprising the bony portion of the rostral cranial fossa. The presphenoid bone articulates with the basisphenoid, ethmoid, frontal bones, and the vomer.
Its body is hollow and contains the right and left sphenoid sinuses, not completely divided by the sphenoid sinus septum.
The wings of the presphenoid bone participate in the formation of the orbit and optic canal, and its internal surface helps in the formation of the cranial cavity.
References
Getty R. Anatomia dos animais domésticos de Sisson & Grossman. 5ª edição. Rio de Janeiro: Guanabara; 1986.
König HE, Liebich HG. Anatomia dos Animais Domésticos. 7ª edição. Porto Alegre: Artmed; 2021
