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青春发育期(12～17岁)是童年到青年的过渡时期,在生理方面会发生显著的变化。女孩进入青春期后,不但身高、体重明显增加.而且内分泌(如雌激素等)也在悄悄地起着作用。它使乳房发育,月经来潮,骨盆变宽,肢体变得圆润丰满,形成女性特有的外形。这时的男孩在睾丸分泌的雄激素作用下,出现首次遗精,声音变粗,喉结明显,全身骨骼粗壮,肌肉结实。青春发育期,虽然肢体增长速度较快,骨胳变得粗
Puberty (12-17 years old) is a transitional period from childhood to youth, with significant changes in the physiology. Girls into adolescence, not only height, weight increased significantly.And endocrine (such as estrogen, etc.) also quietly play a role. It makes breast development, menstrual cramps, pelvis broadening, limbs become rounded plump, forming a unique shape of women. At this time the boy under the testicular androgen secretion, the first spermatorrhea, the sound thicker, Adam’s apple obvious, the whole body sturdy, muscular. Puberty, although limbs grow faster, the bones become thick