Khan Academy Static

Do you remember when you were just a sperm and an egg, or when you were just made up of 32 cells, or when you were a blastocyst attaching to your mom’s uterus? These videos should help jog your memory about the nine months before you came into this world as an human being.

14949_Implantation.html

14951_Germ_layer_derivatives.html

14948_Early_embryogenesis_Cleavage_blastulation_gastrulation_and_neurulation.html

14947_Egg_sperm_and_fertilization.html

14950_Gestation.html