human reproduction
Skip this Video
Download Presentation
Human Reproduction

Loading in 2 Seconds...

play fullscreen
1 / 18

Human Reproduction - PowerPoint PPT Presentation

  • Uploaded on

Human Reproduction. Review. Both males and females produce specialized sex cells called “gametes.” Each gamete contains ½ of the genetic information to form a new individual. Fertilization: Joining of egg and sperm. . The Male Reproductive System. Main function: produce and deliver sperm

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

PowerPoint Slideshow about 'Human Reproduction' - zeheb

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
  • Both males and females produce specialized sex cells called “gametes.”
  • Each gamete contains ½ of the genetic information to form a new individual.
  • Fertilization: Joining of egg and sperm.
the male reproductive system
The Male Reproductive System
  • Main function: produce and deliver sperm
  • A sexually mature human male, produces millions each day.
  • Sperm are produced in the testes by meiosis (spermatogenesis).
  • Review (meiosis)
structure of sperm
Structure of Sperm
  • Tail- used for locomotion.
  • Midsection- contains mitochondria. Why?
  • Head- holds chromosomes and digestive enzymes which allow sperm to penetrate into the egg.
the pathway of sperm
The “Pathway” of Sperm

Seminal Vesicle

Prostate Gland



Sperm produced here


Vas Deferens from scrotum to urethra

Bulbourethral Gland


(sperm storage)

the pathway of sperm7
The “Pathway” of Sperm
  • 1. Testes (formation)
  • 2. Stored and nourished in epididymis
  • 3. Vas deferens
  • 4. Pick up fluids in three glands

-Seminal vesicles provide fluid that “nourishes” sperm.

- Bulbourethral gland and prostate gland create a fluid that makes sperm resistant to acid.

  • 5. Urethra
  • 6. Ejaculation (tube to bladder is blocked off by a valve)

**Sperm + Glandular secretions = SEMEN.

female reproductive role
Female Reproductive Role
  • The females reproductive role is to:

1.) Make and release eggs.

2.) Nourish the developing fetus.

female anatomy
Female Anatomy

Fallopian Tube

Fertilization occurs here

Egg formation






the menstrual cycle
“The Menstrual Cycle”
  • Eggs begin to mature in ovaries before a female is born.
  • All the eggs remain immature until puberty.
  • Each egg develops inside a “follicle.”
  • Usually only one egg makes it to maturity each month.
the menstrual cycle11
“The Menstrual Cycle”
  • Ovulation: egg bursts out of the follicle and is released, moving through fallopian tube, where it may be fertilized.
  • The uterus must be ready to accept a fertilized egg.
  • Different hormones help to control the menstrual cycle.
female hormones
Female Hormones

1.) FSH (Follicle stimulating hormone)

- Causes follicles to mature.

2.) LH (Leutinizing hormone)

- LH causes at least one follicle to burst open—


birth control
Birth Control

1.) Physical forms

- Condoms block the sperm from getting

to egg.

2.) Chemical forms

- “The pill.” Prevents release of FSH and


- Result = No ovulation. Normal menstrual

cycle proceeds.

fertilization and development
Fertilization and Development
  • Zygote- Newly fertilized egg.
  • Once it begins to divide, it is called an embryo.
  • Embryo must “implant” itself into the uterine wall.
the placenta
The Placenta
  • Transports materials back and forth to the embryo.
    • Oxygen – Carbon dioxide
    • Nutrients (carb’s, protein, fat)
    • Urea (liquid, cellular waste)
    • Antibodies
maternal health
Maternal Health
  • The health of the baby depends on the health and activities of the mother.
  • Smoking, drugs, alcohol, radiation, and pathogens can all harm the fetus.

Spina bifida


Pregnancy is divided into 3, three month segments called “trimesters.”

  • 1st-All vital organs are formed
  • 2nd –Circulatory system functioning
  • 3rd – Eyes open
stopping of the menstrual cycle
Stopping of the Menstrual Cycle
  • Between ages 45 – 55 ovulation and menstruation stop.
  • The shut down of ovarian and uterine cycles is known as menopause.