Nine weeks update

Baby T is nearly an inch long, about the size of a grape and weighs just a fraction of an ounce and is starting to look more and more human. The essential body parts are accounted for, though they'll go through plenty of fine-tuning in the coming months. Other changes abound: Baby T's heart finishes dividing into four chambers, and the valves start to form — as do tiny teeth. The embryonic "tail" is completely gone. Baby T's organs, muscles, and nerves are kicking into gear. The external sex organs are there but won't be distinguishable as male or female for another few weeks. The eyes are fully formed, but eyelids are fused shut and won't open until 27 weeks. Baby T has tiny earlobes, and the mouth, nose, and nostrils are more distinct. Now that the basic physiology is in place, Baby T is poised for rapid weight gain.