Anatomy of the Face - Flipbook - Page 41
Parietal Bone
The function of the cranium, and hence the parietal bones, is to protect the underlying fragile brain. The parietal bone is slightly
curved and has a quadrilateral shape. It has two surfaces, four borders and four angles. The borders articulate with the
neighboring skull bones to form various cranial sutures.
The parietal bones are bilateral skull bones that form the superior and lateral walls of the cranium. They overlie the parietal lobes of
the brain and are covered superficially by the epicranial aponeurosis. The parietal bones are part of the neurocranium, together
with the frontal, ethmoid, sphenoid, temporal and occipital bones. The bulk of each parietal bone forms the calvaria (skull cap),
while the remaining smaller part is a component of the cranial base (basicranium).
MUSCLE ATTACHMENTS
The external surface is convex and smooth and has several features: parietal eminence. superior temporal line for attachment of
temporalis fascia. inferior temporal lines for attachment of temporalis muscle.
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