145例男性青少年性发育调查

The survey of the sex development of 145 male adolescents aged 12 to 16

我们于1987年3～4月份对郑州四中随机抽取的145名男生进行了一次性发育调查,内容包括生殖器与阴毛的测定、手腕部X光摄片及身高、体重测量。结果表明,睾丸纵横径均随年龄增长而增加,睾丸纵径与时间年龄和骨龄间均有相关关系存在,且睾丸纵径随骨龄增加的增长比随时间年龄增加的增长更明显。随着睾丸纵、横径的增长,阴茎亦逐渐发育增大。阴毛在12岁时已开始发育。

We surveyed the sex development of 145 randomly--chosen male ado-lescents,who came from the fourth middle school of Zhengzhou The indices included: chronological age (C.A), bone age (B.A. ), hight, weight, genitalia andpubic hair. The results showed that the longitudinal and horizontal diameters oftestes grew with age, the logitudinal and horizontal diameters of testes was correla-ted positively with both C.A. and B.A, and the logitudinal diameters of testes grewmore significantly with B. A. than with C.A.. With the growth of testes,peniesdeveloped gradually. Pubic hair occured at the age of twelve.