[Study on the sexual development of adolescent male].
OBJECTIVE
The investigation of the testicular volume, the penis length and the T, FSH, LH, PRL levels in serum were taken in 289 adolescent males to provide the valuable data for andrology.


METHODS
The adolescent males were grouped according to their age. The testicular volume was measured with testicular model and the T, FSH, LH, PRL levels in serum were determined by immunoenzymetric assay.


RESULTS
The male sexual development was rapid from age 11 to 16 and close to that of adult at age 18. Serum PRL of adolescent males was higher than that of adult males.


CONCLUSIONS
The age 11 to 16 is a period of rapid growth in sexual maturation. PRL may play an important role in sexual maturation.
Gai
Ling
L
Institute for Family Planning of Shangdong Province, Jinan, Shandong 250002, China.
Yang
Dan-Tong
DT
Sun
Hui-Qing
HQ
Xu
Guan-Zhao
GZ
Qiu
Yi
Y
Zhang
Li-Feng
LF
Ren
Zheng-Da
ZD
D000293:Adolescent; D001827:Body Height; D001835:Body Weight; D012739:Gonadal Steroid Hormones / Q000097:blood*; D006801:Humans; D008297:Male; D010413:Penis / Q000502:physiology*; D013737:Testis / Q000502:physiology*
D012739:Gonadal Steroid Hormones