3D video baby update: Week 16

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Mom, I'm like an avocado (11.6cm, 100 grams)

My head becomes more proportional to my body - the head-to-body ratio changes from 1:1 to 1:3. Facial muscles are developed enough that I can make different expressions - furrow my brow, open my mouth, and even smile. The nervous system is mature enough that I can coordinate movements of different body parts simultaneously. Fingernails and toenails are well-formed and growing. If I'm a girl, ovaries that were previously in the abdominal cavity begin their journey downward. My heart pumps about 25 liters of blood daily through an increasingly complex vascular system.

Remember mom, every child develops at their own pace and has their unique timeline. If you have any doubts about my development in your belly, consult with a doctor.