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?