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头颅的发育在小儿生长发育过程中占很重要地位,因头颅内的主要器官是“脑”,有人将脑比作指挥机体活动的“司令部”,这并不过分。因此,通过研究头颅的发育可粗略了解脑的发育情况。婴儿出生后,脑在生长发育过程中处于领先地位,尤其在第一年更为突出。新生儿脑的重量为350克,相当于体重的1/8～1/9,到六个月时即达600克左右,一岁时达900克,几乎为初生的3倍,而成人的脑重为1.5公斤,相当于体重的1/38～1/40。所以,头颅发育最迅速的阶段也是在生后到五岁,尤其是初生到三岁这一
The development of the skull plays an important role in the growth and development of the child. Because the main organ in the skull is the brain, some people compare the brain to the “headquarters” that command the activity of the body, which is not excessive. Therefore, by studying the development of the skull can be a rough understanding of brain development. After the baby is born, the brain is in a leading position in the growth and development process, especially in the first year. The newborn’s brain weighs 350 grams, which is equivalent to 1/8 to 1/9 of body weight, reaching about 600 grams at six months, 900 grams at one year old, almost three times as much as newborn, and adult brains Weight 1.5 kg, which is equivalent to the weight of 1/38 ~ 1/40. Therefore, the most rapid stage of development of the skull is also from birth to five years of age, especially from birth to age three