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Compare puberty in females with puberty in males.

Circle the BEST answer.
Which is true?
a Boys begin puberty earlier than girls.
b Boys begin puberty between the ages of 9 and 11.
c Little growth occurs during adolescence.
d Menarche marks the onset of puberty in girls.

In the male, before puberty

a. FSH levels are higher than after puberty.

b. LH levels are higher than after puberty.

c. GnRH release is inhibited by testosterone.

d. all of the above.

Question

What are the age ranges for the onset of puberty in males and in females? At what point does puberty end?

Solution

Verified

The signal that induces puberty is the secretion of GnRH from the hypothalamus. This hormone affects pituitary gland to secrete FSH and LH, which regulate the function of reproductive organs and stimulate the production of testosterone in testicles, as well as estrogen and progesterone in ovaries. The onset of puberty is within 9 to 14 years of age in males and between 8 to 13 years of age in females. The puberty ends when secondary sexual characteristics occur. At this point begin the period of adolescence.

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