Where does the hormonal signal for the start of puberty begin?
Usually after a girl’s 8th birthday or after a boy turns 9 or 10, puberty begins when an area of the brain called the hypothalamus starts to release gonadotropin-releasing hormone (GnRH).
What signals the biological events that begin puberty?
The biological events that begin puberty involve a hormonal signal from the: hypothalamus. In females, the glands that are sometimes perceived as the sex glands are the: ovaries.
What are the hormones that increase when puberty starts?
Puberty occurs when a part of the brain called the hypothalamus begins to produce a hormone (gonadotropin) that has an effect on the testes and ovaries causing an increase sex hormone estrogen in girls and testosterone in boys.
