This animated short shows the development of boys up to and during puberty. It depicts the typical external changes that occur with the onset of sexual maturity, the structure and function of the sexual organs, sperm formation and pollination.
Feb 1, 2020
Mar 22, 1895
Jan 1, 2011
Nov 20, 2015
Nov 13, 2016
Jan 1, 2006
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Sep 22, 1964
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Jun 1, 1978
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