This week your baby measures approximately 12.5-14cm (5-5.6 inches) in length and weighs about 150 grams (5.25 ounces). Your baby is looking more and more human as time goes by. Your baby can now make facial expressions, including frowning and squinting. Eyes are still closed, but are sensitive to light outside the abdomen. Eyelashes and eyebrows have started to grow.
Limbs become longer and start to gain proportion and begin to move as the connections between the nerves and muscles are established. The nerves are now being coated in myelin (a fatty later), enabling them to pass messages to and from the brain. Your baby's hands can now form fists and if they meet, will clasp together. The lungs are developing , but until birth the placenta will provide your baby's oxygen.