KIN 2500 Chapter : Chapter 7
15 Mar 2019
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Posterior to carotid canal between petrous portion of temporal bone and occipital bone. Bounded anteriorly by sphenoid bone, posteriorly by petrous portion of temporal bone, and medially by the sphenoid bone and occipital bone. Posterior border of mastoid process of temporal bone. Between superior and inferior portions of small wing of sphenoid bone. Junction of anterior and medial parts of sphenoid bone. Between styloid and mastoid processes of temporal bone. This fossa houses the frontal lobes of the cerebral hemispheres of the brain. The middle cranial fossa is inferior and posterior to the anterior cranial fossa. Like the sphenoid bone that surrounds it, it is shaped like a butterfly, with a small median portion and two expanded lateral portions. The median portion is formed by part of the body of the sphenoid bone, and the lateral portions are formed by the greater wings of the sphenoid bone, the temporal squama and the parietal bone.
