Questions
Fetal Development
Major Milestones after Conception
- Week 1: Baby attaches to the uterus
- Week 2: Rapid development occurs
- Week 3: Heart starts beating
- Week 4: Brain and spinal cord developing
- Week 5: Facial features are visible; Hands and feet forming
- Week 6: About 3/4 inch tall; Brain waves measurable; Fingers and toes forming
- Week 7: Baby coordinates movements and sucks thumb; Genitals forming
- Week 8: About 1 1/2 inches tall; Pain felt; All organs functioning
- Weeks 9-12: About 3 1/2 inches tall; Baby can smile, sleep, wake and clasp hands