The skull base is the lower part of the skull that supports the brain and forms the floor of the cranial cavity. It consists of several bones, including the sphenoid, temporal, and occipital bones, which provide protection and structure. The skull base also contains important openings for nerves and blood vessels. This area is crucial for various functions, as it houses the brainstem and connects the brain to the spinal cord. Additionally, the skull base is involved in the passage of cranial nerves, which control essential functions such as vision, hearing, and balance.