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I was reviewing Kaplan neuro and it explains that in caudal neuropore defect, alpha-fetoprotein is normal b/c the caudal end of the spinal cord plays no role in swallowing reflex, whereas there is an increase in alpha-fetoprotein in anencephaly which leads to no swallowing reflex. This all make sense, but can anyone explain how a fetus removes amniotic fluid by swallowing? I mean do they drink the amniotic fluid and pee out? Just out of curiosity how this works. Many thanks in advance.