They act like an expansion joint.
This allows the bone to enlarge evenly as the brain grows and the #skull expands.
The result is a symmetrically shaped head.
Some sutures extend to the forehead, while others extend to the sides and back of the skull. One suture in the middle of the skull extends from the front of the head to the back.
The major sutures of the skull include the following:
#Suture
#FrontalSuture
Metopic suture. This extends from the top of the head down the middle of the forehead, toward the nose. The 2 frontal bone plates meet at the metopic suture.
#CoronalSuture
Coronal suture. This extends from ear to ear. Each frontal bone plate meets with a parietal bone plate at the coronal suture.
#SagittalSuture
Sagittal suture. This extends from the front of the head to the back, down the middle of the top of the head. The 2 parietal bone plates meet at the sagittal suture.
#LambdoidSuture
Lambdoid suture. This extends across the back of the head. Each parietal bone plate meets the occipital bone plate at the lambdoid suture.
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