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青春期的特征是第二性征呈现伴生长突增,亦即内、外生殖器的发育成熟至具备生育能力以及体格、体态从儿童状态过渡至具成人表型。这一系列形态、功能改变主要是由神经-内分泌系统改变所介导,其中主要涉及促生长激素轴和性腺轴,即下丘脑-垂体-性腺(hypothalamic-pituitary-gonad
Adolescence is characterized by secondary sexual manifestations with the sudden growth of the sudden, that is, internal and external genitalia mature to have fertility and physical, physical state transition from child to adult phenotype. This series of morphological and functional changes are mainly mediated by changes in the neuroendocrine system, mainly involving the growth hormone axis and the gonadal axis, hypothalamic-pituitary-gonad