![]() Of particular importance is the strength of these bones relative to how thin they are. The parts of these bones that lie inferior to the brain are considered to be a part of the skull base (mentioned below). These bones protect the brain superiorly, but also provide an anchor for important muscles of facial expression and eye movement. The calvarium, also known as the roof or skull cap, consists of three bones: The fontanelles undergo complete ossification within 9 – 18 months from birth.Ĭlinical relevance: Fontanelle abnormalitiesĪn enlarged anterior fontanelle can be due to endocrine pathologies like congenital hypothyroidism.Ī bulging anterior or posterior fontanelle may suggest raised intracranial pressure, which may occur in hydrocephalus.Ī sunken anterior or posterior fontanelle may suggest dehydration.
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