Puberty Interactive Body Activity-BBC Girls

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 What triggers puberty in Girls?

The                                         in the brain produces                                                    releasing hormone.

This stimulates the                                            (also in the brain) to emit                                            stimulating hormone and                                          hormone.

When these arrive at the ovaries, they trigger the release of the sex hormones,                                                 and                                       

In girls estrogen iniciates                                              and progesterone prepares the bofy for possible pregnancy.

Facial development

During bunerty, bones inside the face                          

A girl’s face lenghthens and changes shape from round to                                , but it doesn’t change as dramatically as boy’s

Sweat

Before puberty we produce sweat to control                                                              . During puberty, we begin to sweat in a new way.

We start to produce a                           , fatty, greyish sweat in response to                              , emotion and                                                                         .

As bacteria                                           the sweat, it starts to smell – this smell is known as BO (                                                                               )

This sweat is only produced in                                     , belly button, ears,                               , and nipples.

The hair found in many of these areas provides a large surface area  for the smell of                                         sweat to disperse from.

Breast development

The first external sign of puberty in girls, breast take                              years to grow in a series of stages:

Before puberty, only the                       of the nipple is                                    .

The nipple and breast start                                           and the                                    (dark skin surrounding nipple) enlarges.

The breast grows as fat                                    inside.

The areola                                and milk ducts start forming inside the breast.

Both the areola and nipple                                , forming a mound on top of the breast.

The breasts become                                         and the areola flattens

Pubic hair, hips, thighs and periods.

Pubic hair usually starts to grow shortly after the                                   start to                                   

It becomes                              , dark and                                 and forms an                                                    triangle shape.

The pelvic bones grow and the hips                             .

                         Develops on the hips, thighs and                                 , making the body more curvaceous.

Menstrual cycle

Fluctuating hormone levels star a “menstrual cycle” that controls a woman’s fertility

The average                              of this cycle is              days.

A girl’s period ( or                                          ) starts on Day One, when the thick uterus lining is                                            along with                                and                             .

After the period is over, the uterus lining                                   in preparation for

                                   .

Around day                 , the ovaries release an egg.

If the egg is                                                                 , the menstrual cycle will begin with another period.