* 9 weeks: Fingernails form, can bend its fingers around an object and suck its thumb.
* 9 weeks: Fingernails form, can bend its fingers around an object and suck its thumb.
* 10 weeks: All parts of body sensitive to touch; can swallow, squint, frown, and pucker brow.
* 10 weeks: All parts of body sensitive to touch; can swallow, squint, frown, and pucker brow.
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* 11 weeks: Breathing amniotic fluid and does so constantly until birth, urination, all facial expressions (including smiling) possible, taste buds complete.
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* 11 weeks: Breathing amniotic fluid and does so until birth, urination, all facial expressions (including smiling) possible, taste buds complete.
* 12 weeks: Can kick, turn over, make a fist, hiccup, cry, open its mouth, press its lips together, and practice breathing.
* 12 weeks: Can kick, turn over, make a fist, hiccup, cry, open its mouth, press its lips together, and practice breathing.
* 13 weeks: All senses are present, including vocal chords.
* 13 weeks: All senses are present, including vocal chords.