196. Basis cranii - anterior, middle and posterior cerebral fossae
Borders
Anterior cranial fossa: Formed mainly by the frontal bone, cribriform plate of ethmoid, and lesser wings of sphenoid.
Middle cranial fossa: Formed by the body and greater wings of the sphenoid and parts of temporal bones.
Posterior cranial fossa: Formed by the occipital bone and parts of temporal and sphenoid bones.
Contents
Anterior fossa: frontal lobes of brain, olfactory bulbs and tracts.
Middle fossa: temporal lobes, pituitary gland (in sella turcica), cavernous sinus.
Posterior fossa: cerebellum, brainstem (pons, medulla), cranial nerves IX–XII.
Relations
The fossae are separated by bony ridges: anterior clinoid processes, sphenoid ridges, petrous ridges, and grooves for dural venous sinuses.
196. Basis cranii - anterior, middle and posterior cerebral fossae
Borders
Anterior cranial fossa: Formed mainly by the frontal bone, cribriform plate of ethmoid, and lesser wings of sphenoid.
Middle cranial fossa: Formed by the body and greater wings of the sphenoid and parts of temporal bones.
Posterior cranial fossa: Formed by the occipital bone and parts of temporal and sphenoid bones.
Contents
Anterior fossa: frontal lobes of brain, olfactory bulbs and tracts.
Middle fossa: temporal lobes, pituitary gland (in sella turcica), cavernous sinus.
Posterior fossa: cerebellum, brainstem (pons, medulla), cranial nerves IX–XII.
Relations
The fossae are separated by bony ridges: anterior clinoid processes, sphenoid ridges, petrous ridges, and grooves for dural venous sinuses.
196. Basis cranii - anterior, middle and posterior cerebral fossae
Borders
Anterior cranial fossa: Formed mainly by the frontal bone, cribriform plate of ethmoid, and lesser wings of sphenoid.
Middle cranial fossa: Formed by the body and greater wings of the sphenoid and parts of temporal bones.
Posterior cranial fossa: Formed by the occipital bone and parts of temporal and sphenoid bones.
Contents
Anterior fossa: frontal lobes of brain, olfactory bulbs and tracts.
Middle fossa: temporal lobes, pituitary gland (in sella turcica), cavernous sinus.
Posterior fossa: cerebellum, brainstem (pons, medulla), cranial nerves IX–XII.
Relations
The fossae are separated by bony ridges: anterior clinoid processes, sphenoid ridges, petrous ridges, and grooves for dural venous sinuses.
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