Baby waves hello!
Baby’s hands and feet are developing quickly this week— finger and toe joints develop and separate. The baby can now move their hands, wave their arms, and bend their elbows and knees. This week, the fetus's tail disappears [1].
All the major organs and systems of the body continue to develop. With the two hemispheres already formed, the brain separates into its three main parts [2]. In the digestive system, the intestines start to form, as do the liver and pancreas [3]. In the respiratory system, the embryonic trachea branches out into the bronchi. As part of the endocrine system, the kidneys, adrenal glands, and ureters develop further. `
What we see on an ultrasound
On an ultrasound, your baby’s movements can let you know if they are asleep or awake.
In the first picture, the large dark oval is the amniotic sac. Notice the baby’s posture: they are lying with their back toward the frontal wall of the uterus, and we can see that the baby’s back has straightened.
At this stage of pregnancy, the baby's bones and skeletal muscles are growing stronger. In this picture, the baby’s arms are pressed to their chest. Baby’s arms are still growing faster than their legs.
Baby’s head is clearly visible in the image and you can see that their head has begun to grow rounder.
