Puberty Interactive Body Activity_BBC. BOYS

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BOYS

What triggers puberty in Boys?

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 boy’s testes, they trigger the release of the sex hormone,                                                .

Testosterone                                        through the body initiating                                     

Facial development

The bones of the                                            ,                                   and nose grow rapidly in response to                                              .

This                                         the face from round to a more oval shape.

Facial hair                                to                               .

Voice breaking

Boys’ voices                            during their teenage years. They drop in                              as much as an                                               .

This is                                      by tstosterone. It causes the cartilage of the                                                            to grow larger and the vocla cords to become longer.

During this time, the voice box                                 . It can start to                                                as a prominent “Adma’s apple” on the neck.

When we speak, our vocal cords                                as the air is                                         of our lungs. As boy’s vocal cords get longer, they vibrate more                                       producing a lower                                          sound.

As the face, jaw, lungs and                            grow, they provide more space for the voice to                                           in,                                           it even                                               .

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.

Hand Growth

The bones of the hands and                           change during puberty.

As the hand grows, the                       become                                  packed with bones. By age     this gaps have disappeared.

Once the gaps have gone, the ends of the bones                               and growth                            .

Male genitals, pubic hair and erections

Genital and pubic hair.

The first external sign of puberty in boys is when the                                              start to get bigger.

Pubic hair                                and the penis begins to                                             .

Over the next              to          years the testicles, scrotum and penis continue to grow.                                        becomes coarse,                                  and                            .

Erections

Boys get erections                                          they star to                                         sexually.

Blood                          into the erectile tissue in the                                                , making it                  .