Which suture separates the frontal bone from the parietal bones?

The coronal suture is the connective tissue joint that separates the frontal bone from the parietal bones in the human skull. This suture runs horizontally across the top of the head, extending from ear to ear, and it plays a crucial role in the structure of the skull by allowing for growth during development. The naming reflects its position—'coronal' is derived from the Latin word for 'crown,' indicating its location where the frontal bone overlaps the parietal bones at the anterior aspect of the skull.

Understanding the role of the coronal suture is important, not just in terms of anatomy, but also in understanding normal skull development and variations that can occur. This knowledge can significantly aid in recognizing certain cranial features or in clinical situations where craniosynostosis, a condition where sutures fuse prematurely, may be a concern.