Assertion: occipital bone | /r/LocatedNear | the foramen magnum
Facets:
Source sentences:
text: The occipital bone is part of the calvaria or skull roof; it surrounds the foramen magnum through which the medulla of the brainstem, important arteries and nerves, and a protective membrane pass.
text: It surrounds the foramen magnum, a near-circular gap through which the medulla of the brainstem, nerves, arteries, ligaments, and tectorial membranes pass.