This week in the womb:
The arms and legs continue to develop - These limbs are stretching out more and more. Later on you will be feeling those feet and elbows up close and personal right in your bladder. The embryonic tail has almost disappeared. The pituitary gland is also forming and the embryo is beginning to grow muscle fibers. The heart has divided into the right and left chambers and is beating about 150 beats a minute which is about twice the rate of an adult. The baby's facial features are visible, including a mouth and tongue. The eyes have a retina and lens. The major muscle system is developed, and the baby starts to practice moving. The baby has its own blood type and the blood cells are produced by the liver now instead of the yolk sac. The embyro is 3/4 of an inch big (or the size of a quarter).
Grow baby, grow!
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