The embryo is now known as a fetus, which in Latin means “young one.” This young one will soon start sucking her thumb. All essential internal organs are formed and functioning
Essential Facts
• The kidneys are producing urine
• The head rounds out and comprises half the size of the fetus
• Bone formation is now underway in most bones
• Eyelids close to protect the eyes
• The genitals are differentiated
• The brain now controls muscle movement, as seen by yawning and sucking
For Further Discussion
One of the functions of the placenta, which is now completely developed, is to provide nutrient-rich, oxygenated blood to the child’s body. This nourishing blood circulates through the vein and arteries in the umbilical cord connecting the child to the placenta.