Posterior fontanel closure occurs by what age?

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Multiple Choice

Posterior fontanel closure occurs by what age?

Explanation:
Infant skull growth relies on fontanels, soft spots where the skull bones haven't yet fused, to allow brain growth and birth canal passage. The posterior fontanel, a small spot at the back of the head, closes earlier because its sutures fuse sooner. By about 2 months of age, the posterior fontanel is typically no longer palpable, which is why that timing is the expected closure. In contrast, the much larger anterior fontanel stays open longer, usually closing around 12 to 18 months as the brain continues to grow. So, 2 months is the typical closure time for the posterior fontanel.

Infant skull growth relies on fontanels, soft spots where the skull bones haven't yet fused, to allow brain growth and birth canal passage. The posterior fontanel, a small spot at the back of the head, closes earlier because its sutures fuse sooner. By about 2 months of age, the posterior fontanel is typically no longer palpable, which is why that timing is the expected closure. In contrast, the much larger anterior fontanel stays open longer, usually closing around 12 to 18 months as the brain continues to grow. So, 2 months is the typical closure time for the posterior fontanel.

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