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Reproduction

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Human Reproduction - The path of reproductive cells

Storyboard Text

  • PATH OF REPRODUCTIVE CELLS
  • Reproduction can be a complicated process. Let's break it down and find out how it works!
  • Reproduction
  • REPRODUCTIVE CELLS
  • TESTIS
  • EPIDIDYMIS
  • Reproduction can be made simple by following the development and path of reproductive cells. 
  • VAS DEFERENS
  • Sperm cells are the male reproductive cells formed in the testes.  An egg is the female reproductive cell formed in the ovaries.
  • PROSTATE
  • Testes are egg-shaped organs where the sperm is produced. Testes are made up tightly coiled tubes called seminiferous tubules.
  • SEMINAL VESICLES
  • After being produced in the seminiferous tubules, sperm travel to the epididymis, where they mature.
  • URETHRA AND PENIS
  • The vas deferens is a long tube that connects the epididymis to the urethra. This is the path for sperm cells.
  • The prostate secretes an alkaline (basic) fluid that neutralizes the acids in the female reproductive system.
  • Seminal vesicles produce a fluid rich in sugars that sperm use for energy. This fluid, added with the fluid from the prostate gland, will be combined with sperm cells to make semen.
  • Sperm leave the body by passing through the urethra. The penis deposits sperm in the female reproductive system during sexual activity.
  • OVARIES
  • VAGINA
  • CERVIX
  • UTERUS
  • Each month, the female reproductive system prepares for a possible pregnancy by releasing a mature egg cell from the ovaries.
  • FERTILIZATION 
  • The vagina is a muscular canal that leads from the outside of the body to the uterus. Sperm cells enter through the vagina during intercourse. 
  • FALLOPIAN TUBES
  • The cervix is a narrow portion at the bottom of uterus that provides an opening to the uterus from the vagina. The cervix will need to dilate during labor. 
  • UTERUS
  • The uterus is a hollow, muscular organ which expands during pregnancy. The uterine walls build up and break down during the ovulation cycle, causing menstruation.
  • PATH OF REPRODUCTIVE CELLS
  • Reproduction
  • When a sperm cell and egg unite, cell division begins. If fertilization takes place, it will happen in the fallopian tubes. 
  • The fallopian tubes serve as a passageway for the ovum from the ovary to the uterus. Smooth muscle contractions and cilia move ovum towards the uterus. 
  • If an ovum is fertilized, it will implant in the wall of the uterus, starting the first stages of pregnancy.
  • The first signs of pregnancy usually show up after about two weeks. About half the time, a fertilized egg does not implant and pregnancy will not begin.
  • That wasn't so bad! Are there any questions?
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