In the
sphenoid bone
The sphenoid bone is an unpaired bone of the neurocranium. It is situated in the middle of the skull towards the front, in front of the basilar part of occipital bone, basilar part of the occipital bone. The sphenoid bone is one of the seven bones ...
, the posterior border, smooth and rounded, is received into the
lateral fissure of the
brain
The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It consists of nervous tissue and is typically located in the head ( cephalization), usually near organs for special ...
; the medial end of this border forms the anterior clinoid process, which gives attachment to the
tentorium cerebelli;
it is sometimes joined to the
middle clinoid process by a spicule of bone, and when this occurs the termination of the groove for the
internal carotid artery
The internal carotid artery (Latin: arteria carotis interna) is an artery in the neck which supplies the anterior circulation of the brain. In human anatomy, the internal and external carotids arise from the common carotid arteries, where these b ...
is converted into a
(carotico-clinoid).
Etymology
The anterior and posterior clinoid processes surround the sella turcica like the four corners of a four poster bed. Cline is Greek for bed. –oid, as usual, indicates a similarity to.
The term may also come from the Greek root ''klinein'' or the Latin ''clinare'', both meaning "sloped" as in "inclined".
Additional images
Image:Anterior clinoid process.jpg, Anterior clinoid process
Petroclinoid ligament
The petroclinoid ligament is a fold of
dura mater. It extends between the
posterior clinoid process and anterior clinoid process and the petrosal part of the
temporal bone of the skull.
See posterior clinoid process page for full information on this ligament.
References
External links
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Bones of the head and neck
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