A groove (called the laryngotracheal groove) forms this week, which will later become the larynx or voice box. Your baby’s placenta and amniotic sac are both continuing their development. The earliest blood vessels are forming in your baby and in the placenta and blood circulation is apparent before this week is over. The circulatory system becomes your baby’s first functioning organ system. Your little baby’s skeletal, digestive and central nervous systems are starting to take shape now. A hollow tube, called the neural tube, is created during this time. This is why folic acid is so incredibly important during these first few weeks after conception, which prevents neural tube defects from occurring.
Your baby’s cute facial features are just beginning their development, with the tiny mouth becoming evident. Indentations in your baby’s head end are present and will soon become the eyes, ears and a fully-formed mouth. Inside the head, your baby’s brain is creating brain activity already, absolutely amazingly!
