The baby can open their eyes
The baby’s body is proportionally developed now, with a fully formed face, hair, eyebrows, and eyelashes.
This week, the baby will open their eyes for the first time [1]. They can now notice changes in lighting, and will soon begin to blink. For now, their eyes are blue, but soon they will change color according to their genes. Eye color may continue to change until the age of three [2].
Baby is stretching, kicking, and reacting to sounds, and their hands make grasping movements [3]. They can now move each arm and leg separately, so their movements can be directed towards all parts of the uterus.
The baby’s lungs begin to produce surfactant, a liquid that protects the airways. Thanks to this substance, the baby will later learn to breathe independently [4].
If your partner is expecting twins
The babies can now look at each other for the first time! At this time, they both have blue irises, but soon their eyes will change to the color dictated by their genes. If your partner is having fraternal twins, they may not have the same eye color [5].
What we can see on an ultrasound
The picture shows a cross-section of the chest. The lungs are white, and the heart is the dark area in the middle of the image. The heart takes up almost a third of the chest. Four parts of the heart are visible: two atria and two ventricles, and the partitions between them.
