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Basisphenoid bone
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Muscles of facial expression, human anatomy, (Netter replacement project - SSC). Human face, human head.
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Basisphenoid bone

anatomy
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Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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Basisphenoid bone, in reptiles, birds, and many mammals, a bone located at the base of the skull. It is immediately in front of the bone that contains the opening through which the brainstem projects to connect with the spinal cord. In humans the basisphenoid is present in the embryo but later fuses with the rest of the sphenoid. It contains the hollow in which the pituitary gland rests.

This article was most recently revised and updated by John P. Rafferty.