At twelve weeks....
The neck is present and the face well formed.
The eyelids close and will reopen at about 24 weeks.
Tooth buds appear.
The arms and legs move.
All body parts and organs are present.
The fibers that carry pain to the brain are developed; however, it is unknown if the unborn child is able to experience sensations such as pain.
Definitive signs of male and female gender are present.
A heartbeat can be heard with electronic devices.
The length is about 2 to 3 inches

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