What are the areas where cranial bones join together called?

• A. Joints
• B. Fontanels
• C. Foramina
• D. Sutures

Answer: (D)

Sutures are the fibrous joints that connect the bones of the skull. They are immovable in the adult skull, giving the head its rigid protection for the brain. In infants, these joints aren’t fully fused yet, allowing the skull to grow as the brain expands. Fontanels are the soft, membranous gaps between some skull bones in newborns that will gradually ossify to close the sutures. Foramina are openings in bones for nerves and blood vessels, not joints. So the areas where cranial bones join are sutures.