At what age do an infant’s head and chest circumference become equal?

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Multiple Choice

At what age do an infant’s head and chest circumference become equal?

Explanation:
Infant growth shows head size expanding rapidly in the first year due to brain growth, while the chest expands more gradually. At birth the head is larger than the chest, and as the infant approaches about 12 months, the chest circumference catches up to the head. By around 1 year, they are about equal, and then the head remains slightly larger as growth continues. This is why the age when head and chest circumferences become equal is approximately 1 year.

Infant growth shows head size expanding rapidly in the first year due to brain growth, while the chest expands more gradually. At birth the head is larger than the chest, and as the infant approaches about 12 months, the chest circumference catches up to the head. By around 1 year, they are about equal, and then the head remains slightly larger as growth continues. This is why the age when head and chest circumferences become equal is approximately 1 year.

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