Download Male Reproductive System

Reproduction and Sexuality
Ground Rules
No personal questions of anyone
Respect is absolutely mandatory!
In this unit…
We will be learning about the functions of the
male and female reproductive systems
We will talk about why parents choose to have
children
We will review the events that lead to conception
and birth
We will cover the birth process
We will cover the role relationships have in
reproduction and pregnancy
What is sexuality?
Sexuality is part of human personality,
including all aspect of being male or female
4 dimensions
Biological
Psychological
Cultural
Ethical
Why do we study sexuality?
To Understand ourselves
Understand others
Develop positive decision making skills
regarding sexuality
Dispel myths and rumors
Statistics (MN student survey)
Survey
Why are families
changing?
Technology
Increased communication tech. Allows
families to be apart, yet maintain
contact
Ease of travel allows people to live
farther apart, yet still be an active part
of their family
Changing societal values
Marriage without children
Cohabitation
Divorce
Dual-Career Families
Still talking about language
Gender
Biological basis
XY sex chromosomes = males
XX sex chromosomes = female
Gender role development
We learn about the roles of males and
females by observing the people who
surround us
Parents and other relatives
People on TV
People in Movies
People in Books and Magazines
Gender stereotypes
Definition: A generalized notion of
what a person is like based on only that
person’s gender
Ways they can be harmful:
Limit a person’s opportunities
Make a person question their sexuality
Influence people’s behavior in an
inappropriate manner
Before we can continue…
We need to know about our
Endocrine System
Get a red book, and fill out the
worksheet with a partner
Male Reproductive System
Hormones and puberty
Puberty begins when the pituitary
gland sends a chemical message to
the testes = make lots of testosterone
Testosterone = changes in sexual
characteristics
Changes in the Primary Sex Characteristics
External and internal sex organs increase in size
and maturity
Development of Secondary Sexual
Characteristics
Increase in bone density
Increase in muscle mass
Deepening of the voice
Increase of metabolism
Increase in pubic/body hair
Legs
Armpits
Face
Groin/scrotum
Chest
Other types of growth
occur during puberty
Emotional
Social
Spiritual
Morals and ethics
Mental
The male reproductive system
External
Penis
Male organ of sexual pleasure,
reproductions, and urination
Scrotum
Holds and protects the testes; regulates
temperature of the testes
Internal
Urethra
Goes from the bladder to the outside
world
Passageway for urine and semen
Vas Deferens
Long thin cord that connect the testicles
to the urethra
Prostate
Gland under the bladder and surround the
urethra
Gives sperm a protein shake like fluid
Seminal Vesicles
Small glands that give sperm a “Power
Bar”
Testes (factory)
The two male gonads inside the
scrotum
Secrete testosterone and produce
sperm
Epididymis
Where sperm matures
Comma-shaped structures found on
the back surfaces of the testes
Sperm Development and
Delivery
Sperm growth begins in the testes
Sperm reaches maturity in the epididymis
Sperm production begins ~ 12
Average male produces ~ 150 million
sperm/day
The role of the sperm cell is to carry the
father’s ½ of the genetic material to the egg
Sperm Production
Sperm is produced in the testicles
From here it moves to the vas deferens
where fluids are added to form semen.
The fluid from the seminal vesicles =
60% of the semen
This gives energy
Cowper’s gland
This adds fluid to lubricate the urethra
The prostate gland produces a fluid
that protects the sperm as it travels
through the female reproductive tract
Ejaculation
This is the ejection of the semen from
the penis.
When the semen enters the female, the
sperm “swim” upward using their tails.
Sperm can survive in the female body
for several days
If every dot was a sperm cell…
Erections
An erection occurs when the penis fills
with blood making it stiff and erect.
Humans are a minority, they don’t
have a penis bone.
Nocturnal emissions
Wet dreams
It is normal for these to happen, and it
is normal for these not to happen.
Keeping the reproductive
system healthy
Cleanliness
Protection and prevention
Tight clothing – avoid
Any signs of pain when urinating, unusual
discharges, or sores require medical
examination.
Testicles should be examined monthly for
cancer
Disorders of the Male
Reproductive System
Sterility
Undescended Testes
Inguinal Hernia
Enlarged prostate
Cancer of the Prostate and Testes
Write 2 sentences describing your
assigned disorder