Your baby is about 0.63 inches (1.6 cm) from crown to rump and weighs about 0.04 ounces (1 gram). It is slowly beginning to look human. Its fingers and toes are beginning to form this week (toe rays) and the arms can flex at the elbow and wrists.
Internally, the baby’s intestines are growing longer and developing into the umbilical cord until week 12 when the baby is large enough to fit them. Your baby’s genitals are also starting to form, but they are still not developed enough to determine if your baby is a girl or a boy.
His face is also becoming more obvious as lips, tongue and nostrils are present. Your baby also has developed eyelid folds and nerve cells, and the retina is beginning to form in the eye. And he is growing smarter as the brain is developing. The cerebellum, which controls muscle movement, is emerging.
The baby’s bones are also starting to harden and his heart is also developing its aortic and pulmonary valves.