Chapter 18_1 Male Reproductive System

What is Your Health IQ
Which Statements Are True or False?
1.
2.
3.
4.
5.
6.
7.
8.
9.
Sperm are made in the vas deferens.
Both sperm & urine travel through a man’s urethra,
although not at the same time.
Testicular cancer is most common among men who are
over the age of 50.
Estrogen is the primary hormone in males.
Eggs are made in the ovaries.
The uterus is the organ in which a fetus develops.
A woman produces several eggs every month.
Fertilization of the egg usually occurs in the fallopian
tubes.
By the end of the 6th month of pregnancy, all the baby’s
major body structures are formed.
What is Your Health IQ
Which Statements Are True or False?
1.
2.
3.
4.
5.
6.
7.
8.
9.
Sperm are made in the vas deferens. False, the testes
Both sperm & urine travel through a man’s urethra,
although not at the same time. True
Testicular cancer is most common among men who are
over the age of 50. False, 15-35
Estrogen is the primary hormone in males. False,
testosterone.
Eggs are made in the ovaries. True
The uterus is the organ where a fetus develops. True
A woman produces several eggs every month. False, 1
Fertilization of the egg usually occurs in the fallopian tubes.
True
By the end of the 6th month of pregnancy, all the baby’s
major body structures are formed. True
The Male
Reproductive System
Objectives
• State (What is) the role of the male reproductive
system
• Describe (What is) the function of each of the
organs of the male reproductive system
• Summarize (What are) the problems that can
occur with the male reproductive system
• List (What are) the things a male can do to keep
his reproductive system healthy
Key Vocabulary Words & Definitions
• Sperm - the sex cell produced by the
testes & needed to fertilize an egg
• Egg (Ovum) - the sex cell produced by
the ovaries & can be fertilized by sperm
• Testes (Testicle) - male reproductive
organ that makes sperm & testosterone
Key Vocabulary Words & Definitions
• Fertilization -the
process by which a
sperm & an egg
w/their genetic
material join to create
a new human life
• Reproduction – the
process of producing
a new human being
Key Vocabulary Words & Definitions
• Semen - a fluid made up of sperm & other
secretions from the male reproductive
organs
• Ejaculation – the release of semen through
the urethra
The Penis
The Male Reproductive Organ That:
• Removes urine from the
body
• Delivers sperm to the
female reproductive
organs
• Is erect during ejaculation
• Can ejaculate while
sleeping called “wet
dreams”
Key Vocabulary Words & Definitions
•
•
•
Glans – the tip
(head) of the penis;
made up of nerve
endings that make it
extremely sensitive
Shaft – the rest of
the penis
Circumcision –
removal of the
foreskin; often done
for religious/cultural
reasons
What Is Puberty & What Happens To
The Body?
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
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Begins between 12-14 years old
Hair growth (face, chest, arm pit, pubic)
Shoulders broaden
Voice deepens
Penis grows… Sometimes
Testicles produce sperm and testosterone
The sex drive begins…
What Does The Male Reproductive System Do?
• The male
reproductive
system works to
produce sperm
and deliver it to
the female
reproductive
system.
The Path Of The Sperm
How the Male Reproductive System Works
The male reproductive system is made up of internal
and external organs.
Testes (testicles)
– Makes sperm
(hundred million
sperm/day)
– Makes testosterone
(major sex hormone
of male)
– Rests in the scrotum
(keeps the sperm
cooler than normal
body temperature)
The Path Of The Sperm
Epididymis
• Sperm travels
from testes to the
Epididymis where
they finish their
development;
• Sperm stays in
the Epididymis
for 6-10 days;
The Path Of The Sperm
Vas Deferens
• From the Epididymis,
sperm travels through
the Vas Deferens waiting
to be ejaculated;
• Sperm will live for up to
6 weeks before they
disintegrate
The Path Of The Sperm
Seminal Vesicles
• Produces a thick
secretion that helps
sperm move easier
• Produced at the
beginning of an
orgasm as sperm is
being released
The Path Of The Sperm
Prostate Gland
• Secrets a thin, milky
fluid that protects the
sperm from acid in
the female
reproductive system
• Fluid is no longer
sperm, now it is
semen
The Path Of The Sperm
The Bulbourethral or Cowper’s
Gland & Urethra
• Cowper’s Gland Secrets a clear fluid
that protects the
sperm from acid in
the male urethra
• Urethra - The canal
through which urine
and semen leaves
the body.
Problems of the Male Reproductive
System
Problem
What Is It ?
Symptoms
Treatment
Jock Itch
Fungal infection of
groin area
Itchy rash in groin
Keeping area cool
and dry
Cystitis
Inflammation of
the urinary
bladder
Burning during
urination
Antibiotics
prescribed by a
doctor
Prostatitis
Bacterial infection
of the prostate
Fever, pain in the
pelvis
Antibiotics
prescribed by a
doctor
Inguinal hernia
Bulging of the
intestines or other
structure through
a weakness in the
abdominal wall
Abnormal bulge in Immediate medical
the abdomen,
care
groin, or scrotum
Problem
What Is It ?
Testicular
Torsion
Twisting of a testes –
can happen during
physical activities
Elevation of a
Immediate medical
testes, swelling & care; if not, testes
tenderness, nausea
may need to be
or vomiting
removed
Undescended
Testes
One or both testes
not moving from the
abdomen to the
scrotum during fetal
development
One or no testes in
the scrotum
Prostate
Cancer
50+
Testicular
Cancer
15 – 35 yr.
olds
Symptoms
Treatment
Surgery or
hormone therapy
Abnormal division of Difficulty, burning, Surgery, radiation,
cells in the prostate;
or blood from
&/or
urinating or
may be hereditary
chemotherapy
defecating – or no
symptoms
Abnormal division of
cells in the testes;
may be hereditary
Lump on testes,
enlargement of
testes, sense of
heaviness, or no
symptoms
Surgery, radiation,
&/or
chemotherapy
6 Ways To Keep Healthy
1. Wear appropriate protective gear when
playing contact sports.
2. Avoid wearing tight clothing.
3. Wash the penis & scrotum every day, &
dry yourself carefully after showering.
4. If you are not circumcised, wash
underneath the foreskin.
5. Perform a monthly testicular self-exam.
6. Have an annual checkup w/a doctor.
Preventing Problems
 Watch for any changes or
symptoms that might indicate a
problem.
 If any symptoms or problems are
present, see the doctor right away.
Preventing Jock Itch
•
•
•
•
•
A fungal infection in the groin area.
Physically active males in hot & humid locations
are more likely to get jock itch.
Can usually prevent jock itch by wearing cotton
clothing & by drying themselves thoroughly after
a shower.
It is important to avoid wearing damp clothes for
too long
Avoid sharing towels or clothes w/others.
Preventing Trauma
•
•
•
Injuries due to an external force
Injuries can happen playing sports,
from car or bicycle accidents, or during
“horseplay”.
One way to reduce the risk of traumatic
injuries to the testes is to wear
protective gear when playing sports.
Preventing Hernias
•
•
•
•
•
•
When a piece of the intestine bulges into a
weak place in the wall of the abdomen or
groin.
Caused by straining to lift or push something
heavy.
Can occur when coughing or sneezing.
Doctors check for signs of a hernia by feeling
for bulges in the groin while a male coughs.
Avoid strenuous lifting
Use your knees, not your back to when lifting
heavy objects.
Preventing Infertility
•
•
•
Inability to fertilize an egg
Infertility can be genetic
It can be caused by environmental
conditions such as heat & trauma to the
testes.
Testicular Self-Exam
1. Each month, perform the selfexam during or after a warm
bath or shower
2. Stand in front of the mirror,
and hold the penis out of the
way
3. Examine each testicle
separately
4. Look and feel for any lumps or
any change in the size, shape,
or consistency of the testicle
5. Contact your doctor if you
detect any troublesome signs
Early Detection Of Prostate
Cancer
•
•
•
•
Occurs mainly in older males
Regular exams can detect prostate
cancer early.
Treatment is most effective when
prostate cancer is detected early
Delaying doctor’s exams &/or treatment
can be deadly.
Section 2.1 Review
Using Key Terms
• Identify the key term for “the sex cell that is
produced by the testes & that is needed to
fertilize an egg.
• Sperm
• Define the term testes.
• The male reproductive organ that makes
sperm & testosterone.
Understanding Key Ideas
• What are the functions of the male
reproductive system?
• To produce & deliver sperm to the female
reproductive system.
• What are the functions of the penis?
• Removes urine from the body &
• Deliver sperm to the female reproductive
system
What is the path of the sperm
through the male reproductive
organs?
• Testes
• Epididymis
• Vas Deferens
– Seminal Vesicles
– Prostate Gland
– Bulbourethral
(Cowper’s) Glands
• Urethra
• Penis
Compare The Symptoms Of
Testicular Cancer W/Inguinal Hernia
• Testicular Cancer
• Unusual lumps
• Enlargement or
feeling of heaviness
or fullness in the
scrotum
• Inguinal Hernia
• Abnormal bulge in the
abdomen or groin
• Sense of heaviness,
pain, or fullness
List Ways A Male Can Keep His
Reproductive System Healthy
 Wear protective gear
when playing contact
sports.
 Avoid wearing tight
clothing.
 Wash the penis,
underneath the foreskin &
scrotum every day,
 Dry yourself carefully after
showering.
 Perform a monthly
testicular self-exam.
 Have an annual checkup.
 Look for changes or
symptoms that might
indicate a problem.
 If any symptoms or
problems are present,
see the doctor right
away.
 Prevent:
Jock Itch
Trauma
Hernias
Infertility
Critical Thinking
1. Why do you think the male reproductive
system produces so many sperm cells?
2. How might the male reproductive system
be affected if the seminal vesicles did not
function?