Which cranial bone forms the back and base of the cranium?

The occipital bone is the cranial bone that forms the back and base of the cranium. It is located at the lower posterior part of the skull and serves several important functions. Notably, it contains the foramen magnum, which is the large opening that allows the spinal cord to connect with the brain. The occipital bone also articulates with the first cervical vertebra, facilitating head movement. Its position at the back and base of the skull is crucial for protecting the brain and providing structural support. The unique shape and placement of the occipital bone are essential in stabilizing the skull and supporting the various functions of the brain it encloses.