Fetal Growth (Month 1) (Page 1 of 1)
FIRST MONTH (FIRST TRIMESTER)
Week One – Technically you are not really pregnant in the first week because the egg hasn’t been fertilized yet.
Week Two- During the second week, the body begins preparing for the baby called ovulation. This is when the lining of the uterus thickens while the ovarian follicles mature. When the follicles mature, one will release an egg down the fallopian tube and It will eventually meet with a sperm to begin fertilization.
Week Three- After fertilization, the egg, or zygote, divides several times and becomes a ball of tiny cells. It is now called a blastocyst, at this stage it will travel through the fallopian tube to the uterus. Here it will remain for the nine months while it transforms into a baby girl or boy.
Week Four- When the blastocyst reaches the uterus, it begins to separate into the placenta and the embryo and certain body parts begin to develop. The inner layer, known as the endoderm, will develop into your baby's digestive system, liver, and lungs. The middle layer, called the mesoderm, will soon be your baby's heart, sex organs, bones, kidneys, and muscles. The outer layer, or ectoderm, will eventually form your baby's nervous system, hair, skin, and eyes
3/18/2013 3:00:08 PM