10 weeks Oct. 20, 2009 • Size: Length 1.25-1.75 in, weight <.25oz, Size Grape
"The baby graduates this week! Now that all of its major organs have formed (brain, lungs, kidneys, heart, etc.), it's officially called a fetus instead of an embryo. And if you think baby's come a long way so far, you ain't seen nothing yet!"
- Ages and Stages
"Though it's barely the size of a kumquat (weird I know) — a little over an inch or so long, crown to bottom — and weighs less than a quarter of an ounce, the baby has now completed the most critical portion of its development. This is the beginning of the so-called fetal period, a time when the tissues and organs in the body rapidly grow and mature.
It's swallowing fluid and kicking up a storm. Vital organs — including the kidneys, intestines, brain, and liver (now making red blood cells in place of the disappearing yolk sac) — are in place and starting to function, though they'll continue to develop throughout the pregnancy.
If you could take a peek inside the womb, you'd spot minute details, like tiny nails forming on fingers and toes (no more webbing) and peach-fuzz hair beginning to grow on tender skin.
In other developments: The baby's limbs can bend now. The hands are flexed at the wrist and meet over the heart, and the feet may be long enough to meet in front of the body. The outline of the spine is clearly visible through translucent skin, and spinal nerves are beginning to stretch out from the spinal cord. The baby's forehead temporarily bulges with the developing brain and sits very high on the head, which measures half the length of the body. From crown to rump, it's about 1 1/4 inches long. In the coming weeks, the baby will again double in size — to nearly 3 inches."
- Baby Center
Here is a picture of the size of the feet at 10 Weeks... so precious