Sphenoid bone

Sphenoid bone
Sphenoid bone
	Position of the sphenoid bone
	Animation of the sphenoid bone
Details
Identifiers
Latin	os sphenoidale
MeSH	D013100
TA98	A02.1.05.001
TA2	584
FMA	52736
	Anatomical terms of bone

The sphenoid bone^{[note 1]} 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 the occipital bone. The sphenoid bone is one of the seven bones that articulate to form the orbit. Its shape somewhat resembles that of a butterfly or bat with its wings extended.

^ OED 2nd edition, 1989.
^ Entry "sphenoid" in Merriam-Webster Online Dictionary.
^ Thieme Atlas of Anatomy, Head and Neuroanatomy 2011
^ Chaurasia (31 January 2013). Human Anatomy Volume Three. CBS Publishers & Distributors. pp. 43–45. ISBN 978-81-239-2332-1.

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[1] OED 2nd edition, 1989.

[2] Entry "sphenoid" in Merriam-Webster Online Dictionary.

[3] Thieme Atlas of Anatomy, Head and Neuroanatomy 2011

[Human_Anatomy_Volume_Three-4] Chaurasia (31 January 2013). Human Anatomy Volume Three. CBS Publishers & Distributors. pp. 43–45. ISBN 978-81-239-2332-1.

[note 1]