What are the characteristics in sexual in both boys and girls
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Female secondary sex characteristics
Body changes in girls at puberty due in part to estrogens
enlargement of breasts, uterus, vagina due to estrogens - feminizing hormones and absence of testicular androgens
narrow shoulder, broad hips, diverging arms, female distribution of fat, high-pitched voice, less body hair, more scalp hair
growth of pubic and axillary hair due to adrenal cortex and ovarian (less) androgens
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Puberty in Boys
Puberty may begin as early as age 9 and continue until age 16.
At puberty, the testes increase testosterone production.
Testosterone causes reproductive organs to mature, muscle and bone to grow, facial and pubic hair to appear, and the voice to deepen.
Body changes in girls at puberty due in part to estrogens
enlargement of breasts, uterus, vagina due to estrogens - feminizing hormones and absence of testicular androgens
narrow shoulder, broad hips, diverging arms, female distribution of fat, high-pitched voice, less body hair, more scalp hair
growth of pubic and axillary hair due to adrenal cortex and ovarian (less) androgens
------_--------_----------_----------
Puberty in Boys
Puberty may begin as early as age 9 and continue until age 16.
At puberty, the testes increase testosterone production.
Testosterone causes reproductive organs to mature, muscle and bone to grow, facial and pubic hair to appear, and the voice to deepen.
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