What is a defining feature of the occipital bone?

The defining feature of the occipital bone is its inclusion of the foramen magnum. This large opening is located at the base of the skull and allows the spinal cord to pass through, connecting the brain to the spinal column. The positioning of the foramen magnum is crucial for the central nervous system, as it facilitates the communication between the brain and the body.

The occipital bone itself is situated posteriorly in the skull, forming the back and base of the cranium, which is essential for protecting the brain and providing structural integrity. The presence of the foramen magnum distinguishes it from other bones of the skull, which do not have this significant feature.