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பைடு நூலகம்
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4
Embryonic period:8wk The rudiments of all major organ systems have developed.weight:9g,length:5cm
胚胎期8周 各主要器官系统雏形初现。重 量:9克,长度:5厘米。
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5
Fetal period:9-40wk Increase in cell number and size,structural remodeling of several organ systems.During the third trimester,weight triples and length doubles.Term weight:3250g,length:50cm.
生后第一周,由于多余的细胞外液被排出体外及 摄入不足,新生儿的体重会比出生体重减少10% 。生后两周时应恢复或超过出生体重,此后至满 月,体重每日增加30克左右。
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8
Limb moves purposelessly,smiling occurs involuntarily,eye gazing,head turning,and sucking under conscious control.
儿童体格生长发育
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1
I. 年龄分期 II. 生长发育的指标 III. 影响生长发育的因素
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2
Age Group 年龄分期
Human development progresses through a sequence of events,these landmarks should occur at approximately the same age.It is easier to grasp development by focusing on specific key age group.