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.
1985
1896
1912
2009
2011
2019
2017
1977
1932
2021
2022
2008
1982
2003
2007
2010
2020
1956
1992
