What is the gap in the baby skull call?

The gap in a baby's skull is called a fontanelle, which are soft spots where the skull bones have not yet fused together. These areas allow for flexibility during birth and accommodate the rapid growth of the baby's brain in the early months and years. The most noticeable fontanelle is the anterior fontanelle, located at the top of the head, which typically closes by 12 to 18 months of age. Fontanelles are crucial for the healthy development of a baby's skull and brain.