Changes during Puberty (Science Grade 5)

What is the average menstrual cycle of a girl with menstruation?

When males reach old age, there is a decrease in the produce of testosterone.

It occurs when the female hormone called progestetone is secreted by the ovary to prepare the uterus for fertilization.

When does puberty starts in girls?

It is the most important change in girls.

A pea-shaped gland locates below the brain is called a _________ _____

It is released by the pituitary gland help in the development of the physical characteristics of boys and girls.

When does puberty starts in boys?

_______ - a period when the body begins to develop and change; the transition from being a chaild to being an adult.