以往认为胎儿肺是一个羊水重吸收部位,现在则认为是液体产生的来源。在妊娠末三个月大约每天有300ml 肺液分泌到羊膜腔,但对其分泌的实际调节和肺的重吸收过程了解甚少。现已表明,在妊娠末期的胎羊中,神经肽精氨酸血管加压素及其前体精氨酸血管紧张素二者均能 In the past that the fetal lung is a reabsorption of amniotic fluid, and now is considered a source of liquid. Approximately 300 ml of lung fluid is secreted into the amniotic cavity at about the third trimester of pregnancy, but little is known about the actual regulation of its secretion and pulmonary reabsorption. It has been shown that both neuropeptide arginine vasopressin and its precursor arginine angiotensin can both be present in the fetus at the end of pregnancy