Changes

*Widening of the shoulders

*Widening of the shoulders

*Deepening of the voice

*Deepening of the voice

*Development of the genitals[ref]http://www.medicinenet.com/puberty/page2.htm#physical[/ref]

*Development of the genitals[http://www.medicinenet.com/puberty/page2.htm#physical]

==Time Frame==

==Time Frame==

Puberty usually starts in girls between the ages of 10 and 14 and between 12 and 16 for boys. The process takes different lengths of time for different people based on genetic factors and societal factors such as food supply and nutrition. The average age of the beginning of puberty has decreased measurably over time.[ref]addrefhttp://www.medicinenet.com/puberty/article.htm

Puberty usually starts in girls between the ages of 10 and 14 and between 12 and 16 for boys. The process takes different lengths of time for different people based on genetic factors and societal factors such as food supply and nutrition. The average age of the beginning of puberty has decreased measurably over time.[http://www.medicinenet.com/puberty/article.htm]

== See Also ==

== See Also ==

*[[Hormones]]

*[[Hormones]]

[[Category:Health]][[Category:Human Development]]

[[Category:Health]][[Category:Human Development]]