Anterior clinoid process

The anterior clinoid process is a bilaterally paired posterior projection of the sphenoid bone at the junction of the medial end of either lesser wing of sphenoid bone with the body of sphenoid bone. The two anterior clinoid processes flank the pituitary fossa anteriorly. The free border of the tentorium cerebelli attaches onto the anterior clinoid processes. A middle clinoid process is situated medial to each anterior clinoid process, with the internal carotid artery passing between the two[1]: 509  (i.e. medial to the anterior clinoid process.[1]: 449 )

Anterior clinoid process
Upper and posterior surfaces of sphenoid bone (anterior clinoid process visible at top left)
Upper surface of the base of the skull (label for anterior clinoid process visible at center left. Sphenoid bone is yellow.)
Details
Identifiers
LatinProcessus clinoideus anterior
TA98A02.1.05.022
TA2607
FMA54693
Anatomical terms of bone

Anatomy

Attachments

The free border of the tentorium cerebelli extends anteriorly on either side beyond the attached border of the same side (which ends anteriorly at the posterior clinoid process) to ultimately end by attaching onto the anterior clinoid process.[1]: 440 

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.[2] The term may also come from the Greek root klinein or the Latin clinare, both meaning "sloped" as in "inclined".

Additional images
  • Anterior clinoid process
    Anterior clinoid process


References

Public domain This article incorporates text in the public domain from page 151 of the 20th edition of Gray's Anatomy (1918)

  1. Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). ISBN 978-0-7295-3752-0.
  2. "Anterior clinoid process of the sphenoid bone". AnatomyExpert. Retrieved 20 March 2013.


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