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.
1995
2013
2014
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1979
2003
1936
2023
1972
1950
1999
1974
1929
1997
1954
1951
1952
2025