It’s during this stage, meaning the beginning of the 9th week, that the embryo becomes a full-on fetus. Measuring between 6 and 7 inches and weighing about six grams, it now has all its vital organs that are only going grow further over the coming months. Its rapidly growing brain is growing is now four times bigger than it was four weeks ago. Moving and kicking harder than ever, its digestive and nervous system are developing rapidly. Its face is now well-defined and looks more and more like a little baby. The eyes are closer to one another and little lips are beginning to take form.All his skeletal frame is taking form. His fingers are starting to get a clear definition and organs such as the liver and kidneys are already functioning by themselves. The kidneys filter the baby’s urine, thus contributing to feed the amniotic fluid. As for the liver, it produces red blood cells.
Your baby’s sexual organs will start to get some definition during the 3rd month. Sometimes visible with the ultrasound, it is around the 11th or 12th week that your baby becomes a unique being because he not only has his sexual identity, but also his digital prints, which stay the same for his entire life.
At the end of this third month, his jaw has 32 little buds that will become his future teeth. The more his nervous system will mature, the more he will react to his environment’s stimuli.
Around the end of this first trimester, he will be sensitive to touch, to mommy and daddy’s strokes and to outside noises. His nails and hair have also started to grow. The first reflexes, such as sucking his thumb, rubbing the bottom of his feet against the placenta’s inner wall and a making fists have started. A reflex will continue on even after birth.
At the end of this month...
Baby measures about 11.5 cm
Baby weighs about 45 g
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