Transcript Slide 1 - SRMSHPE

Changes During
Puberty
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Think About This
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?
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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 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!
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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.
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Physical Development
Pituitary Gland sends messages to our bodies.
Hormones are the messages sent to our
reproductive systems.
Testosterone = Male Hormone
Estrogen = Female Hormone
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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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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.
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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.
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The Story About Change
How does fertilization occur?
A male adolescent has two reproductive organs,
called testicles, which produce a male hormone
called testosterone.
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These organs also produce sperm, which are tiny male
cells which join with the egg to cause fertilization.
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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 swims to the join
the female's egg.
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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-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.
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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
-Characteristics of change during puberty
-(Male, Female, Both)
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