1. Changes During Puberty

2. Think About This
What are some physical changes that you anticipate during your teen years?
2. What are some of your questions or concerns about these changes?
3. What psychological changes do you anticipate with friends or with your family?
4. What are some of your questions or concerns about these changes?
5. Who can you talk with when you have questions about these physical or emotional changes?

3. Heredity
A Punnett square for sex determination using the sex chromosomes:
The female produces only one type of egg with respect to sex chromosomes.
She is XX so, with respect to sex chromosomes, she is "homozygous". The male produces two types of sperm, one carrying the X and the other the Y. He is a "heterozyogte", with respect to his sex chromosomes.
Because men are "heterozygotes" it is their sperm that determines whether the woman gives birth to a son or daughter. Men determine the sex of their children.

4. Let’s Take a Look
Alleles are all the forms of a gene for any given trait. There are usually two allele possibilities for every trait. For example: E and e are both alleles for the trait of ear lobes.
Capital letters represent Dominant traits
Lower case letters represent Recessive traits
Unattached Earlobes – It’s a recessive trait!
Alleles are all the forms of a gene for any given trait. There are usually two allele possibilities
for every trait. For example: B and b are both alleles for the trait of hair color.

5. Physical Development
Adolescence is the second-fastest period of physical growth. (you are adolescents)
Puberty is the time when youth start developing physical characteristics of adults of your gender.
Usually starts between the ages of 8 and 14.
Girls typically begin puberty earlier than boys do, but this is not always the case.

6. Physical Development Pituitary Gland sends messages to our bodies.
Hormones are the messages sent to our reproductive systems.
Testosterone = Male Hormone
Estrogen = Female Hormone

7. Physical Changes During Puberty

8. Physical Changes During Puberty

9. Physical Changes During Puberty
The external genital organs include the mons pubis, labia majora, labia minora, Bartholin's glands, and clitoris. The area containing these organs is called the vulva. The external genital organs have three main functions:
Enabling sperm to enter the body
Protecting the internal genital organs from infectious organisms
Providing sexual pleasure

10. Fallopian Tube
Ovary
Uterus
Cervix
Vagina

11. Urethra
Penis
Teste

12. Colorful, more detailed diagrams

13. The Story About Change
At the onset of puberty, our pituitary gland inside our brain begins to send tiny messengers, called hormones, throughout our body.
Females have two small, almond-shaped organs called the ovaries, which contain thousands of tiny eggs.
These glands begin making estrogen, which is the hormone responsible for many of the changes in the female body during puberty, including growing hair, growth spurt, and growing breasts.

14. If an egg is fertilized, a woman has become pregnant.
The Story About Change
Inside one of the ovaries, an egg will begin to grow. When it reaches the surface of the ovary, it pops through and travels through one of the Fallopian tubes.
Eventually, it will reach an organ which is shaped like an upside-down pear, called the uterus, which will have become
lined with blood and tissue, which serve to protect the egg if it becomes fertilized.
If an egg is fertilized, a woman has become pregnant.

15. How does fertilization occur?
The Story About Change
How does fertilization occur?
A male adolescent has two reproductive organs, called testicles, which produce a male hormone called testosterone.
These organs also produce sperm, which are tiny male cells which join with the egg to cause fertilization.

16. How does the sperm get to the egg?
The Story About Change
How does the sperm get to the egg?
Another sex organ, called the penis, will become stiff, or erect, when there is increased blood flow, allowing the male cells to flow through a tube called the urethra, where it may eventually swim to join the female's egg.

17. What if an egg is not fertilized?
The Story About Change
What if an egg is not fertilized?
Another process will occur, called menstruation, or “having your period.”
Approximately once a month, if the egg is not fertilized, the lining of blood and tissue will descend through a small opening, called the cervix, and into the vagina.

18. The Story About Change
This menstrual fluid will flow out of the body for approximately three to five days.
Many girls at this time may feel abdominal cramps, occasional fatigue, headaches, and even fluctuations in mood.
These symptoms are called premenstrual syndrome, or PMS for short. Maintaining a healthy diet and moderate exercise can help ease the effects of this cycle of life.

19. Answer Together
All of the information on here is not taught earlier in the power point… But addresses some key things that are important to understand as the students undergo these changes… EX. Using deodorant, washing skin to keep pores clean, and what a bra is.

20. Human Sexual Development
At the onset of puberty, our ___________ gland inside our brain begins to send tiny messengers,
called ___________ , throughout our body. Females have two small, almond-shaped
organs called the ___________ , which contain thousands of tiny ___________ . These
glands begin making ___________ , which is the hormone responsible for many of the
changes in the female body during puberty, including ___________ , ___________ , and
___________ . Also, inside one of the ovaries, an _________ will begin to grow. When it
reaches the surface of the ovary, it pops through and travels through one of the ___________
tubes. Eventually, it will reach an organ which is shaped like an upside-down pear, called the
___________ , which will have become lined with ___________ and ___________ ,
which serve to protect the egg if it becomes fertilized. If an egg is fertilized, a woman has
become ___________ .
How does fertilization occur? A male adolescent has two reproductive organs, called
___________ , which produce a male hormone called ___________ . These organs also
produce ___________ , which are tiny male cells which join with the egg to cause fertilization.
How does the sperm get to the egg? Another sex organ, called the ___________ , will
become stiff, or ___________ , when there is increased blood flow, allowing the male cells to
flow through a tube called the ___________ , where it may eventually swims to the join the
female's egg.
What if an egg is not fertilized? Another process will occur, called ___________ , or
"having your period." Approximately once a month, if the egg is not fertilized, the lining of
blood and tissue will descend through a small opening, called the ___________ , and into
the vagina. This menstrual fluid will flow out of the body for approximately three to five days.
Many girls at this time may feel abdominal cramps, occasional fatigue, headaches, and even
fluctuations in moods. These symptoms are called premenstrual syndrome, or ___________
for short. Maintaining a healthy diet and moderate exercise can help ease the effects of this
cycle of life.

21. STUDY for your QUIZ! Diagrams of Male & Female Systems
What are the Male & Female Hormones?
What is the gland that starts it all…?
Define/describe fertilization & menstruation
Characteristics of change during puberty
(Male, Female, Both)