The [[1]] serves as a gateway to the brain.

The human brain is an organ inside the head that controls all body functions. It is protected by the cranium (the bones that form the head).

The term skull refers to the bone framework that encloses a vertebrate's head, whereas cranium refers to the part of the skull that encloses the brain.

The skull protects the brain and spinal cord, houses sense organs such as the eyes, ears, nose, and mouth, and serves as a conduit for communication between the body and the outside world via its openings for breathing, seeing, hearing, and speaking.

The skull acts as a gateway to the brain, allowing blood and other fluids to enter and exit the body.