Amnion .Amniotic membrane: amniotic epi. extraembryonic mesoderm aMniotic fluid Produce: 1 )amniotic cells 2)infusion of fluid from maternal blood urine output from the fetus 4)pulmonary secretions Output: 1 absorbed by amniotic cells 2)fetus swallow o30 ml---10 weeks 450 ml---20 weeks 800-1000 m ---37 weeks---circulateAmnion •Amniotic membrane: amniotic epi.+ extraembryonic mesoderm •Amniotic fluid: Produce:1)amniotic cells 2) infusion of fluid from maternal blood 3) urine output from the fetus 4) pulmonary secretions Output: 1) absorbed by amniotic cells 2) fetus swallow •30 ml--- 10 weeks •450 ml--- 20 weeks •800-1000 ml --- 37 weeks---circulate