题目内容

关于胎盘产生的激素的描述,下列哪项是错误的?

A. 人绒毛膜促性腺激素(HCG)与人绒毛膜生长素(HCS)都是糖蛋白激素
B. HCG 的生理功能与 LH 相似
C. HCS 有促生长作用,促进胎儿摄取营养
D. 雌三醇的主要前身物质来自母体的胆固醇
E. 孕激素的生理作用是维持子宫内膜,抑制 T 细胞,防止母体排斥胎儿

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无排卵月经通常是由于缺少

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