Occipital bone
The occipital bone is a bone at the lower back of the skull. At the base of the skull (and the occipital bone) there's a large opening, called foramen magnum, where the spinal chord passes into the skull.
The occipital bone is a bone at the lower back of the skull. At the base of the skull (and the occipital bone) there's a large opening, called foramen magnum, where the spinal chord passes into the skull.