Understanding Skull Sutures: Types, Functions & Development
Skull Sutures
Sutures are immovable joints between skull bones. They allow skull growth, protect the brain, and give each skull its unique shape.
Main Types
- Coronal suture: Runs front-to-back across the top.
- Sagittal suture: Midline front-to-back.
- Lambdoid suture: Back of skull to sides.
Structure
Beveled bone edges interlock like a jigsaw, held by dense sutural ligaments.
Development
Form in fetus; continue developing until early 20s. Typically fuse by age 25. Persistent open sutures (craniosynostosis) can cause health problems.
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