The fetus gains weight rapidly, adding fat. Brain waves show more complex activity. Monitor blood pressure.
Week 17 - Fat Layers Develop
Week 18 - Hearing Develops
Week 39 - Final Growth
Week 35 - Preparation for Birth
Week 24 - Viability Threshold
Week 6 - Limb Buds Appear
Week 19 - Muscle Development
Week 7 - Facial Features Form