1. Prenatal Development. Zygote: conception to 2 weeks
Prenatal Development *Zygote: conception to 2 weeks *Embryo: 3 weeks – 8 weeks *Fetus: 9 weeks to birth

2. ZYGOTE: conception to 2 weeks

3. EMBRYO: 3 weeks – 8 weeks

4. FETUS: 9 weeks to Birth

5. 4 months …..the PLACENTA continues to transfer nutrients/oxygen from mother to fetus and screens out many potentially harmful substances…….TERATOGENS are harmful agents such as drugs/viruses.

6. ALCOHOL… Fetal Alcohol Syndrome

7. Facial Features

8. NICOTINE

9. Flu Virus: Studies indicate if a pregnant woman contracts the flu during the 1st trimester there is an increased risk of developing schizophrenia in the child by 700%, flu in the 3rd trimester increases the risk by 300 % approximately 14% of schizophrenia cases seem to have been caused by the influenza virus during pregnancy.