Which bone forms the crown and upper sides of the head?

The parietal bone is the correct answer because it specifically contributes to the formation of the crown and upper sides of the head. It is one of the major bones of the skull and is located on either side of the head, effectively creating the superior aspect of the cranium. These bones are paired, meaning there are two parietal bones, one on each side, that fuse at the top of the skull along the sagittal suture, forming a significant part of the protective structure for the brain.

The occipital bone primarily forms the back and base of the skull rather than the crown and upper sides. The temporal bone is located on the sides and base of the skull, housing structures related to hearing and balance, but does not form the upper sides or crown. The sphenoid bone is situated more centrally within the skull and does not contribute to the crown or upper side structure. Understanding the correct placement and function of these bones gives insight into cranial anatomy relevant for esthetics and broader health implications.