Embryonic Model

The model represents the development of the human germ cells from fertilisation until the end of the 2nd month of pregnancy in 12 stages. Each stage can be removed from the common stand as an individual part and can be purposefully used for teaching and tests for the embryological specialist field.  Ovum at time of fertilisation (conception) with male gamete (sperm)  Zygote at 2-cell stage, approx. 30 hours after fertilisation  Zygote at 4-cell stage, after around 40-50 hours  Zygote at 8-cell stage, after around 55 hours  Morula  Blastocyst after around 4 days  Blastocyst after around 5 days  Blastocyst after around 8-9 days  Germ cells at approx. 11th day  Germ cells at approx. 20th day  Embryo at around the end of the 1st month of pregnancy  Embryo at around the end of the 2nd month of pregnancy