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Superior view of the skull base. Middle cranial fossa shown in green. 1: Sphenoidal limbus (anterior margin of the chiasmatic groove) 2: Posterior borders of the lesser wings of the sphenoid 3: Dorsum sellae of the sphenoid bone. 4: Superior borders of the petrous part of the temporal bone
The calvaria is the top part of the skull. It is the superior part of the neurocranium and covers the cranial cavity containing the brain. It forms the main component of the skull roof. The calvaria is made up of the superior portions of the frontal bone, occipital bone, and parietal bones. [1]
A cranial fossa is formed by the floor of the cranial cavity.. There are three distinct cranial fossae: [1] Anterior cranial fossa (fossa cranii anterior), housing the projecting frontal lobes of the brain [2]
Below the highest nuchal line is the superior nuchal line. To it is attached, the splenius capitis muscle , the trapezius muscle , [ 1 ] and the occipitalis . [ 2 ]
Skull in situ Human head skull from side Anatomy of a flat bone – the periosteum of the neurocranium is known as the pericranium Human skull from the front Side bones of skull. The human skull is the bone structure that forms the head in the human skeleton. It supports the structures of the face and forms a cavity for the brain. Like the ...
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 , bat or wasp with its wings extended.
Superior view of the skull base. posterior cranial fossa shown in green. 1: Dorsum sellae of the sphenoid bone 2: Superior borders of the petrous part of the temporal bone. 3: Groove for transverse sinus of the occipital bone
The clivus (/ ˈ k l aɪ v ə s /, [1] Latin for "slope") or Blumenbach clivus is a part of the occipital bone at the base of the skull. [2] It is a shallow depression behind the dorsum sellae of the sphenoid bone. It slopes gradually to the anterior part of the basilar occipital bone at its junction with the sphenoid bone. It extends to the ...