- Baby’s heartbeat slows a bit to 160-180 beats per minute.
- Baby’s face, palms of hands, and soles of feet are sensitive to light touch; baby’s fingers bend, hands and eyelids close in response to stimulation.
- Halfway through this week, baby’s eyelids fuse together temporarily to protect delicate developing eyes.
- Genitalia become visible to higher resolution imaging systems, though ultrasound will not be able to see them until the 12th week.
- Thyroid gland turns on.
- Baby’s head moves forward and back, jaw opens and closes.
- Baby sighs and stretches, sucks thumb and swallows amniotic fluid.
- Girls’ ovaries now contain reproductive cells / eggs; uterus is now present.