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Introduction to the Male Structures

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Problems of Male Reproductive System ... Time of puberty pituitary gland releases hormone that stimulates ... Passage way for semen and urine to leave the ... – PowerPoint PPT presentation

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Title: Introduction to the Male Structures


1
Male Reproductive System
  • Introduction to the Male Structures
  • Diagram 18.2 page 470
  • Path of Sperm
  • Problems of Male Reproductive System
  • Care for the Reproductive System
  • Concept Mapping Activity
  • Quiz next class

2
Male Reproductive Structures
  • DO NOW
  • Define Reproductive System
  • List as many Reproductive Structures in the male
    body as you can

3
Reproductive System
  • Major Functions
  • Production of sperm
  • Storage of sperm (male reproductive cell)
  • Time of puberty pituitary gland releases hormone
    that stimulates production of testosterone
    (responsible for physical changes)
  • Fertilization the joining of male sperm and
    female egg

4
MALE Reproductive System
5
Male Reproductive System
6
External Male Reproductive Organs
  • Scrotum- an external skin sac that holds the
    testes
  • Testes- (singular Testis) also called testicles
  • two small glands that produce sperm
  • Produce hormone testosterone
  • Sperm cannot live above normal body temp Skin
    of scrotum keeps the testes slightly below body
    temp muscles in the scrotum relax or contract to
    control temp

7
Penis
  • Penis external organ used for intercourse
    contains three cylinders which become filled with
    blood to increase in size and fullness
  • Glans smooth sensitive end of the penis
  • Foreskin fold of skin covering the head of penis

8
Quick Fact
  • The singular word for testes is testis, from
    Latin meaning to witness. During ancient times,
    a person providing testimony would validate it by
    holding his testes or another mans!!

9
Internal Organs
  • Seminal Vesicle
  • seminal fluid originates in seminal vesicle
  • Provides nutrients and energy to the sperm as it
    travels through the vagina
  • Vas Deferens
  • (ductus deference) move sperm
  • connect the epididymis to the ejaculatory duct
  • Prostate Gland
  • Size of walnut is below the bladder
  • Release nourishing fluid for sperm travel during
    ejaculation

10
Internal Organs Male Reproduction
  • Cowper's Gland
  • Two tiny glands located below prostate,
    neutralize semen
  • Releases pre-ejaculatory fluid
  • Fluid cleanses urethra to protect sperm from acid
  • Epididymis-
  • Tightly coiled tube connecting to vas deference
  • Stores mature sperm
  • Urethra
  • Passage way for semen and urine to leave the body
  • Urinary bladder
  • Storage of urine until excretion

11
Life Travels of Sperm
  • 1. Produced in testes
  • 2. Stored in Epididymis
  • 3. Released into the Vas Deferens
  • 4.Passes seminal vesicle
  • 5. Passes prostate gland
  • 6. Now Urethra passes Cowpers gland
  • 7. travels down the penis and out of the body

12
Sperm!!!
  • Head Contains genetic material
  • Acrosomal Sac- above head contains digestive
    enzyme so can penetrate ovum
  • Neck contains mitochondria energy for sperm to
    swim
  • Tail side to side movement to propel sperm
    through the vagina into the uterus

13
Sperm fun facts
  • Males remain fertile and produce sperm
    throughout their life
  • 300 400 million sperm in each ejaculation
  • Sperm swim 30 inches per hour
  • Sperm make up 5 of what males ejaculate
  • Sperm can live up to 5 days in fertile cervical
    fluid

14
Care for Male Reproductive System
  • Get regular check-ups
  • Go to doctor every 12 18 months
  • Bathe regularly
  • Wear protective equipment
  • use protective cup or supporter during physical
    activities
  • Perform regular self-examinations
  • Check for any changes
  • Practice safe sexual activity or abstinence
  • Use protection or abstain from intercourse

15
STDs effecting male reproductionCommon yet
basic STIs
  • Chlamydia/gonorrhea
  • Bacterial infections cause burning during
    urination.
  • Syphilis
  • Bacterial infection initially painless, then red
    sores appear
  • Genital Herpes
  • Virus blister like sores in genital area

16
Reproduction Problems
  • Inguinal Hernia
  • Separation of tissues allows intestine to push
    into abdomen near top of scrotum
  • Symptoms lump in groin near thigh, pain in
    groin severe case partial or complete intestinal
    blockage

17
Reproduction Problems
  • Sterility Inability to reproduce results from
    too few sperm less than 20 million per
    milliliter of seminal fluid
  • Results from environmental hazards
  • Exposure to X rays
  • Radiation
  • Toxic chemicals
  • Lead
  • Anabolic steroids
  • Drugs
  • Hormonal imbalance
  • STDs
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