1: Early Human Embryonic Development (IC)

1. Organogenetic period

2. Third week

2.1. Gastrulation - primitive streak

2.1.1. Primitive pit

2.1.2. Primitive node

2.1.3. Primitive groove

2.1.4. Prechordal plate

2.2. Notchcord

2.2.1. Notochordal process

2.2.2. Notochordal canal

2.2.3. Notochordal plate

2.3. Neurulation

2.3.1. Neural fold

2.3.2. Neural groove

2.3.3. Neural crest

2.4. Somites

2.5. Intraembrynic coelom

2.6. Early development of CVS

2.7. Development of chorionic villi

3. Third week

4. Second week

4.1. Formation of exocoelomic and amniotic cavities

4.2. Embryonic disk

4.2.1. Epiblast

4.2.2. Hypoblast

4.3. Primary umbilical vesicle (yolk sac)

4.3.1. Extraembyonic mesoderm

4.4. Complete implantation by 10th day

4.5. Uteroplacdntal circulation

4.6. Extraembrionic coelom

4.7. Chorionic sac

5. First week

5.1. Fertilization

5.2. Morula

5.2.1. 12-32 Blastomeres

5.2.2. 3rd of 4rth day

5.3. Blastocyst

5.3.1. When it enters the uterus after 4 days

5.3.2. Blastocystic cavity

5.4. Implantation

5.4.1. Hypoblast

5.4.2. 7th day