Puberty Flashcards
1
Q
Define delayed puberty in females
A
absence of breast development in girls older than 13
2
Q
Define delayed puberty in males
A
absence of testicular development (>4ml) in boys older than 14
3
Q
Define precocious puberty
A
Secondary sexual characteristics present before age 8
4
Q
What is thelarche?
A
Onset of secondary breast development - deteremined by ovarian oestrogen
5
Q
What is adrenarche?
A
The production of androgen in the zona reticularis of the adrenal cortex which stimulates pubic hair
6
Q
What is the average age of menarche?
A
12.3 years in African girls, 12.8 years in Wester Caucasians
7
Q
When is the peak of bone mineralisation in girls and boys?
A
Girls - 14-16
Boys 17.5
8
Q
Impact of oestrogen on bones in puberty?
A
epiphyseal fusion
