Conception to 2 weeks. Sperm penetrates egg and fuses to form one fertilized cell
2-8 weeks. Eyes, fingers, toes, and internal organs form, but are not fully functioning
9 weeks to birth. Heart, lungs, and brain develops. The fetus can now feel pain.
The baby can see, hear, move, and recognize voices.
Cognitive, emotional, and social developmemt. Motor skills develop.