What is the significance of sutures in the skull?

Sutures in the skull are significant because they are fibrous joints that connect the individual bones of the skull. These joints are not movable in the same way that other joints in the body function, but they play a crucial role in providing structural integrity and stability to the skull.

As the human skull develops, it is composed of several pieces that eventually fuse together through these sutures. This process allows for some flexibility during childbirth and accommodates the growth of the brain during early childhood. The sutures help to create a rigid protective structure that encases the brain, while still equipping it with some degree of flexibility.

The other options highlight characteristics that are not true for sutures. While sutures contribute to the overall protection of the brain, the function of protecting it from impact is more associated with the overall structure and composition of the skull rather than the sutures specifically.