Baby at 7 weeks.
Baby at 8 weeks.
Baby at 11 weeks.
Baby at 3-1/2 Months
Baby at 4 months.
Baby at 5 months.
Baby at 6 months
Day 1: fertilization: all human chromosomes are present; unique human life begins
Day 6: embryo begins implanting in the uterus
Day 22: heart begins to beat with the child’s own blood, often a different type than the mother’s
Week 5: eyes, legs, hands begin to develop
Week 6: brain waves detectable; mouth, lips present; fingernails forming
Week 7: eyelids, toes form; nose distinct, baby kicking and swimming
Week 8: organ in place; bones begin to replace cartilage, fingerprints begin to form;
Weeks 9 and 10: teeth begin to form, fingernails develop; baby can turn head, frown
Week 11: all organ systems functioning; the baby has fingerprints, a skeletal structure, nerves, and circulation
Week 12: the baby has all of the parts necessary to experience pain, including the nerves, spinal cord and thalamus
Week 17: baby can have dream (REM) sleep