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Changes During Puberty

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1. 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?

Think About This

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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.

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Let’s Take a LookAlleles 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!

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Physical DevelopmentAdolescence is the second-fastest period of physical growth. (you are adolescents)

Girls typically begin puberty earlier than boys do, but this is not always the case.

Usually starts between the ages of 8 and 14.

Puberty is the time when youth start developing physical characteristics of adults of your gender.

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Physical DevelopmentPituitary Gland sends messages to our bodies.

Testosterone = Male HormoneEstrogen = Female Hormone

Hormones are the messages sent to our reproductive systems.

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Physical Changes During Puberty

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Physical Changes During Puberty

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Physical Changes During Puberty

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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.

The Story About Change

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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.

The Story About Change

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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.

The Story About Change

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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.

The Story About Change

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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.

The Story About Change

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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.

The Story About Change

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Answer Together

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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-shapedorgans called the ___________ , which contain thousands of tiny ___________ . Theseglands begin making ___________ , which is the hormone responsible for many of thechanges in the female body during puberty, including ___________ , ___________ , and___________ . Also, inside one of the ovaries, an _________ will begin to grow. When itreaches 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 hasbecome ___________ .How does fertilization occur? A male adolescent has two reproductive organs, called___________ , which produce a male hormone called ___________ . These organs alsoproduce ___________ , 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 ___________ , willbecome stiff, or ___________ , when there is increased blood flow, allowing the male cells toflow through a tube called the ___________ , where it may eventually swims to the join thefemale'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 ofblood and tissue will descend through a small opening, called the ___________ , and intothe 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 evenfluctuations in moods. These symptoms are called premenstrual syndrome, or ___________for short. Maintaining a healthy diet and moderate exercise can help ease the effects of thiscycle of life.

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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)