In anatomy, the skull is the hard bony structure that protects the brain from damage and gives the head its shape.
If the brain is bruised or injured it can be extremely serious. Normally the skull protects the brain from damage through its hard unyieldingness, but in cases of head injury (eg. subdural haematoma[?]) the intercranial pressure[?] can cause brain damage[?] unless an immediate operation is performed. This is why patients with concussion[?] must be watched extremely carefully.
In earlier times, a skull operation called trepanation often performed for semi-mystical reasons as well as as an attempted life-saving technique.
The skull also contains the sinus cavity.
Cranial bones:
Facial bones:
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