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FIRST week Contraception - Male and female gametes meet and combine into ONE cell , which is the beginning of the new life. 

To think of the egg, think of the heavens, and of weather. The body of the egg is the sun; it is as round and as magisterial as the sun. It is the only spherical cell in the body. Other cells may be shaped like cinched-in boxes or drops of ink or doughnuts that don’t quite form a hole in the middle, but the egg is a geometer’s dream. The form makes sense: a sphere is among the most stable shapes in nature. If you want to protect your most sacred heirlooms — your genes — bury them in spherical treasure chests. Like pearls, eggs last for decades and they’re hard to crush, and when they’re solicited for fertilization, they travel jauntily down the fallopian tube.
How different is the status of the sperm. A sperm cell may be tinier than an egg, measuring only a small fraction of the volume. And men, I will set aside my zygotic bias here to say that your sperm are indeed magnificent when magnified, vigorous, slaphappy, whip-tailed tears, darting, whirling, waggling, heading nowhere and everywhere at once, living proof of our primordial flagellar past.
— http://www.nytimes.com/books/first/a/angier-woman.html

Here are videos to introduce you some of the concepts of Embryology

Click on the LEFT TOP BARS on the video screen to se the complete PLAYLIST

Russian/English google sheet

Themes:

  1.      Introduction to Somatic Embryology
  2.      One Cell – Many Cells
  3.       Blood and Circulation, Placenta, Vessels
  4.      Notochord - Neurulation
  5.      Limb Development –  Rotation
  6.      Summary Wrap up 

This class provides a framework for your studies, opportunities for your questions, and a community to bounce around your thoughts and inquiry

EMBRYO ONLINE

Below are progressions in development