Assists the frontal belly in drawing the epicranial aponeurosis towards the front of the cranium.
2.
The upper, often faintly marked, is named the highest nuchal line, and to it the epicranial aponeurosis is attached.
3.
The ecdysial suture is longitudinally placed on the vertex and separates the epicranial halves of the head to the left and right sides.
4.
The ecdysial suture is made of the coronal, frontal, and epicranial sutures plus the ecdysial and cleavage lines, which vary among different species of insects.
5.
Above these lines the bone is covered by the galea aponeurotica ( epicranial aponeurosis ); below them it forms part of the temporal fossa, and affords attachment to the temporalis muscle.
6.
The surgeon forms a pocket beneath the epicranial aponeurosis ( the subgaleal space ) and allows CSF to drain from the ventricles, creating a fluid-filled swelling on the baby's scalp.
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