Human Growth and Development

Lesson 1 – Introduction to Puberty

Ground Rules

Listen RespectivelyNo Slang No Dumb QuestionsNo Making Fun Of Others

Puberty

Puberty is a time of physical, mental and social changes.Puberty is like popcorn, some kernels pop

early, some pop in the middle and some pop at the end – if you wait long enough they will all pop.

What is the endocrine system?

System of glands that help to regulate body functions.The three most important endocrine glands

during puberty are the pituitary, testes, and ovaries.

The small gland responsible for the growth spurt

Pituitary GlandAbout the size of a pea, this gland is located at

the base of the brain.

What causes the changes at puberty?

HormonesTestosteroneEstrogen

The main hormone produced by the testesTestosterone

It is responsible for many of the sexual changes that occur in boys during puberty

Physical Changes to Males at Puberty

Growth spurtDeeper voiceBroader shouldersBody hairErectionsSperm and Testosterone productionNocturnal Emissions

What is an erection?

When the inner spaces of the penis fill with blood, causing it to become firm, or erect. This may occur due to sexual thoughts,

touching the penis, during sleep, or sometimes for no reason at all.

What is the male reproductive gland?

Testicle or testes

What is the male reproductive cell?

Sperm

The main hormone produced by the ovariesEstrogen

It is responsible for many of the sexual and physical changes that occur in girls during puberty

Changes in girls physical appearance during puberty

TallerBreasts developWider hips

What is the female reproductive gland?

The ovaries

What is the female reproductive cell?

Egg cell or ovum

What is ovulation?

Ovulation is the release of an egg from an ovary.It occurs about once every monthThe ovaries usually take turns releasing an egg

each month

What is the menstrual period?

Discharge of blood from the vagina, usually every month. It is normal and a sign that the female’s body is

preparing so she might have a baby someday

Why is personal hygiene important at puberty?

Sweat glands and sebaceous (oil) glands are more active.Using deodorant/soap and keeping the face

clean is important to prevent acne

Emotional changes at puberty

Concerns about body image, height, genital size

Sexual attractionEmotional highs and lows

Which sex may start having sexual thoughts?Both males and females

Wrap Up Questions:

1. What is one thing you learned today that you did not really know or understand before?

2. Where, or from who, did you learn about puberty?

3. Have you had any talks or discussions with your parents about puberty? Was it comfortable talking about it? Why or Why not?