Articles
Fetal development: The 2nd trimester
Content
Week 13: Urine forms
Week 14: Baby's sex becoming apparent
Week 15: Baby's scalp pattern develops
Week 16: Baby's eyes move
Week 17: Baby's toenails develop
Week 18: Baby begins to hear
Week 19: Baby develops protective coating
Week 20: The halfway point
Week 21: Baby can suck his or her thumb
Week 22: Baby's hair becomes visible
Week 23: Fingerprints and footprints form
Week 24: Baby's skin is wrinkled
Week 25: Baby responds to your voice
Week 26: Baby's lungs develop
Week 27: 2nd trimester ends
Week 19: Baby develops protective coating
Nineteen weeks into your pregnancy, or 17 weeks after conception, growth slows.
A greasy, cheeselike coating called vernix caseosa begins to cover your baby. The vernix caseosa helps protect your baby's delicate skin from abrasions, chapping and hardening that can result from exposure to amniotic fluid.
For girls, the uterus and vaginal canal are forming.
