At 21 weeks your baby is approximately 10.5 inches from head to toe, and weighs approximately 12 ounces(about the size of a carrot).
You may be recognizing a bit of a pattern with your baby's activities. Your baby's eyelids and eyebrows are present now. Arms and legs are finally in proportion, neurons are now connected between the brain and muscles and cartilage throughout the body is turning to bone. All these upgrades combine to give your baby more control over limb movements, which explains all that kicking, and stretching you may have started feeling. Your baby's liver and spleen have been working hard producing blood cells, but now bone marrow spaces are mature enough to help as well. While the placenta is still #1 when it comes to nourishment, now your baby takes in small amounts of amniotic fluid, too. Speaking of carrots, if you eat one this week, there's a good chance your baby will taste it too. Your baby swallows a bit of amniotic fluid each day — not only for nutrition and hydration, but also to practice swallowing and digesting, skills it'll need as soon as it arrives in your arms. And keep this in mind: The taste of the amniotic fluid differs from day to day depending on what you've eaten (spicy enchilada one day, sweet banana the next). That smorgasbord of flavors won't be lost on your baby since your little one has very developed taste buds already. In fact, researchers have noted that babies who were exposed to certain tastes in utero via the amniotic fluid were more eager to eat foods with those same tastes after birth.
Note: Every baby develops a little differently — even in the womb. This information is to give you a general idea of your baby's size.
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