Male Reproductive System

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Male Reproductive System
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Before we begin

• We need to be mature and respectful during this
  unit
• I guarantee you will have questionsASK!
• Why do we need to know the Male and Female
  Reproductive Systems?

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Functions

• Produce and store sperm
• Sperm male reproductive cell
• Transfer sperm to female body during sexual
  intercourse the act of the male penis being
  inserted into the female vagina
• Reproduce!!! When a sperm (male) egg (female)
  join.called Fertilization

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How the male body changes

• During early teen years (12-15) the body starts
  to produce testosterone the male sex hormone.
• Testosterone triggers many physical changes
• Commonly called secondary sex characteristics
• These changes are known as puberty.
• After puberty begins, a male is capable of
  producing sperm for the rest of his life.

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Secondary Sex Characteristics

• Larger muscles
• Longer, heavier bones
• Thicker, tougher skin
• Deeper voice
• Growth of body hair
• Development of pubic hair

• Greater muscle mass
• V-shaped torso
• Enlargement of penis, scrotum, and testes
• Increased metabolic rate
• Sex drive
• Ejaculation of semen

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Male Diagram
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External Reproductive Organs

• Testes two small glands that secrete
  testosterone and produce sperm

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Scrotum

• Thin walled, muscular pouch which holds and
  protects the testes
• Controls the temperature of the sperm (1-2
  below body temperature) through muscular
  contraction and relaxation

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Epididymis

• Epididymis tube above the testis in which sperm
  is matured and stored

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Vas Deferens

• Vas Deferens long tube which carries sperm to
  an organ called the seminal vesicle

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Seminal Vesicles

• Seminal Vesicle produces fluid that mixes with
  sperm to nourish the sperm and make it more
  mobile

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Prostate Gland

• A small gland that surrounds the urethra at the
  base of the bladder
• Releases an alkaline solution to protect the
  sperm from the slightly acidic environment of the
  vaginal tract
• Secretes a milky fluid that makes up the majority
  of semen

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Cowpers Gland

• Lubricates the urethra and neutralizes the acid
  content
• These three are known as accessory glands
  Seminal Vesicle, Prostate, Cowpers)

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Cowpers Gland
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Urethra

• A small tube that extends from the bladder as
  well as from each vas deferens through the penis
  to the outside of the body
• Carries both urine and semen out of the body
  through the penis

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Penis

• The external reproductive organ composed of a
  spongy tissue that contains many blood vessels
• As a result of increased blood flow the penis
  becomes enlarged and erect During arousal, blood
  flow to the penis increases - vasocongestion.
• This causes an erection an enlargement of the
  penis
• Bodys preparation for sexual intercourse

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The male penis

• When penis becomes erect, semen can be ejected
  from the body
• Semen thick fluid containing sperm and other
  secretions
• A series of muscular contractions occurs, thus
  creating an ejaculation expulsion of semen from
  the male penis.
• Nocturnal Emissions may occur ejaculation that
  occurs during sleep. This is perfectly normal!

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The path of sperm cells from production to
release
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Cowpers Gland
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The path of sperm cells from production to
release

• Sperm cells are produced in the (1)testes
• Stored in the (2)epididymis
• Travel through the (3)vas deferens
• Combine with fluid from the (4)seminal vesicles
• Combine with fluid from the (5)prostate gland
• Combine with fluid from the (6)Cowpers gland
• Now called semen, travels through the (7)urethra
  in the penis
• Leaves the body through the opening in the penis
  during ejaculation

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The male Penis

• Foreskin thin, loose flap is skin that covers
  the tip of the penis
• Usually removed at birth
• This is known as circumcision

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Circumcision
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Keeping the male reproductive system healthy

• Bath regularly
• Wear Protective Equipment
• Practice Abstinence not having sex before
  marriage to avoid STDs sexually transmitted
  disease
• Perform self-exams
• Get regular check-ups!

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Staying Healthy

• Bath regularly
• All males should wash pubic area with soap and
  water
• Uncircumsized males need to pull back foreskin
  and clean

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Heres what you can do

• . Perform self-exams
• Males should gently message each testicle to
  detect any bumps or abnormalities
• Do this at least once a month
• Looking for signs of testicular cancer!
• Earlier the detection, the easier it is to treat!

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Problems of the male reproductive system

• Sterility inability to reproduce
• Result of too few sperm or sperm of poor quality
• May be caused by
• Exposure to chemicals, lead, x-rays, radiation
• Hormonal imbalances, STDs, steroids!

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Problems

• Testicular Cancer
• Occurs mostly between ages of 14-40
• Mostly treatable with early detection

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Problems

• Prostate Cancer
• The prostate gland can become enlarged due to
  tumors
• The earlier you detect this, the greater the
  chance of recovery.

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Problems

• Inguinal Hernia- weakness of the wall of the
  inguinal canal coming through the abdominal
  cavity.