Analysis Of The PBS Nova Video Life's Greatest Miracle

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The PBS Nova Video, Life’s Greatest Miracle depicted the incredible journey of through the human body as new life begins. The video took a close look into the womb, into a cell, and shed light life itself. The video was divided into eight sections. Section one, started with the discussion of the natural drive to reproduce. The video indicated that “almost every cell of your body you have thirty thousand or more different genes, spread out over long strands of DNA called chromosomes. Most cells have two versions of every gene on a total of 46 chromosomes. Exactly half of those, 23, came from your mom, and 23 came from your dad. They come in pairs where the partners are very similar but not quite the same. The only time they get …show more content…

This section started by the introduction of a couple who are expecting their first child, Melinda and Sergio Iruegas. The video then explains the differences between male and female reproductive systems. Healthy men, have been producing sperm continuously since puberty. Eggs are formed while a woman in still a fetus. The video indicated that Melinda was approximately 30 years of age and may only have a few thousand of her eggs left of her millions. Only one egg a month is capable of fertilization. “The egg has everything it needs to start a new life, except one thing: DNA from a sperm” (Cort, 2001). However, if the egg is not fertilized within a few hours it dies. The video discussed mating rights and when a male is successful in wooing a female, then proceeds to mate with her. During this point the sperm is ejaculated and the egg is fertilized. Section three of the video depicts the journey of the sperm. The sperm encounters obstacles on the journey for the egg. The sperm will need to survive the acidic environment and travel through the cervix into the fallopian tube. If the female has ovulated an egg will be present. The sperm must get past the helper cells and penetrate the thick protein coating of the egg. The video captured the moment of …show more content…

All the fetus’ nutrients and oxygen come from the mother’s blood. During the fourth month of development, bone replaces the fetus’s cartilage and may begin to hear sound. The remaining part of this section showed the developmental process in each stage of development. The final section, eight, depicts the events leading up to birth and the birth itself. The fetus has formed all its organs and is growing to size during the third trimester. In preparing for birth, fat is being stored in the fetus body and myelination begins. During the end of the third trimester the fetus hunger for fat that the placenta can no longer supply or meet the fetus needs. The video shows and explains the birth of the Iruegas baby. This video showed the very essence of conception to birth of a newborn. I believe that this video can provide a new look to those who may not have actual knowledge of human development and the stages to what develops

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