Baby E weighs as much as half an ounce now, and the crown-to-rump length is about two and a half inches (the size of a large plum). Baby E has more than doubled in size during the past three weeks. And that's just on the outside — there's plenty going on on the inside too. The fetal digestive system is beginning to flex its digestive muscle — literally — as it starts practicing contraction movements, a skill Baby E will need after birth to push food through the digestive tract. The pituitary gland at the base of the brain has started producing hormones. And the bone marrow is making white blood cells, which will one day help Baby E fight infections.
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