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What is The amniotic fluid is in balance by : and explain in detail?
Ans. is a, b, c Amniotic fluid originates from In early pregnancy - As an ultrafiltrate of maternal plasma (i.e., option "b" correct). By beginning of the second trimester - It consists of extracellular fluid which diffuses through the fetal skin (i.e., option "e"). After 20 weeks - Cornification of skin prevents this diffusion and amniotic fluid is composed of fetal urine (option "a" correct). Also know : The water in the amniotic fluid is completely changed and replaced in every 3 hours. Other minor contributors : * Pulmonary fluid Fluid filtering through the placenta The fetus swallows 200 - 500 ml liquor every day at term. (Option "c" correct) i.e. Excretion by fetal kidneys; Maternal hemostasis; Fetal intestinal absorption