5th Week's Notes

Hello everyone! In last week, as you know we had covered Heredity and Conception. So in this week we are going to look at Chapter 3; prenatal development. We have mentioned just 2 stages which are Germinal and Embryonic stages. The germinal stage is the period of development between conception and the implantation the embryo. (First 2 weeks)

 

Zygot  →   Blastocyst  →  Embryo

             

We had questioned the stem cell. What are the pros and cons of stem cell? Actually I have searched it and found some useful information about it.

Here the links: http://www.experiment-resources.com/stem-cell-pros-and-cons.html

Second stage was Embryonic Stage. (Between 3-8weeks) This is really really really critical period for our baby!!! J Because embryonic stage begins with implantation and covers the first 2 months during which the major organ systems differentiate. Brain of our baby, his/her teeth buds and nerves begins to develop. Bones cells appear. Shape of the PLACENTA is similar to the ISLAK HAMBURGER as Ryan said in the lecture. J J J   

Finally, I just would like to remind you human embryos and fetuses at various stages of development.

How they are ugly :DDD

Have nice weekend to all of you… ;)