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sphenoid bone
n/a
19
Anatomy
Professional
07/05/2009

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Term
sphenoid bone
Definition
-complex shape resembling that of a butterfly.

-refered to as a bridging bone because it unites the cranial and facial bones and articulates with almost every other bone of the skull
Term
body
Definition
-medially, thick body.

-houses sphenoidal sinuses.
Term
sphenoid sinus
Definition
moisten inhaled air and give resonance to voice
Term
sella turcica
Definition
-houses pituitary gland.

-on either side of the sella turcica are projections called the anterior clinoid processes and the posterior clinoid process.

-the anterior border of the sella turcica is formed by the tuberculum sellae and the posterior border is formed by the dorsum sellae.
Term
dorsum sellae
Definition
the posterior border of the sella turcica
Term
tuberculum sellae
Definition
anterior border of sella turcica
Term
hypophyseal fossa
Definition
the drepression between the greater and lesser wings of the pituitary gland that is suspended inferiorly from the brain.
Term
lesser wing
Definition
form part of the anterior cranial fossa, contain optic canal
Term
greater wing
Definition
form part of middle cranial fossa and orbit
Term
optic foramen
Definition
-houses optic nerves.
-this is located at either end of the optic groove
Term
anterior clinoid process
Definition
on either side of the sella turcica is this projection called the anterior clinoic process.
Term
posterior clinoid process
Definition
on the side of the sella turcica
Term
foramen ovale
Definition
-this penetrates the greater wings of the sphenoid bone.
-these openings carry blood vessels to the meninges around the brain and nerves to structures of the orbit, face and jaws.
Term
foramen lacerum
Definition
-this penetrates the greater wings of the sphenoid bone.
-these openings carry blood vessels to the meninges around the brain and nerves to structures of the orbit, face and jaws.
Term
foramen rotundum
Definition
-this penetrates the greater wings of the sphenoid bone.
-these openings carry blood vessels to the meninges around the brain and nerves to structures of the orbit, face and jaws.
Term
pterygoid processes

lateral
medial
Definition
-vertical projections that begin at the boundary between the greater and lesser wings.
-each pterygoid process forms a pair of medial and lateral pterygoid plates, which provide the attachment surfaces for some muscles that move the lower jaw and soft palate.
Term
superior orbital fissure
Definition
Term
pterygoid canal
Definition
located on either side of the body and transmits nerves.
Term
optic chiasma site
Definition
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