试述雌激素对子宫的生理作用。
男,44岁,患乙肝多年,现腹痛,腹胀,AFP增高,消瘦、乏力,影像检查如图,最可能的诊断是() ["肝血管瘤","肝腺瘤","肝转移癌","肝硬化、肝癌","肝局灶性结节增生"]
骨折刚达到临床愈合时,正处于骨折愈合过程的哪一阶段() ["血肿机化演进期","骨折后2周以内","原始骨痂形成期","骨痂改造塑形期","永久骨痂形成期"]
患者男,25岁,因“腹部外伤2h”来诊。腹痛难忍,伴恶心、呕吐。拟诊胃肠道外伤性穿孔。支持上述诊断的主要依据是() ["A.腹膜刺激征","肠鸣音消失","腹部X线片:膈下游离气体","血白细胞计数增高","高热、脉快、口渴"]
流行性出血热多尿期的发病机制是() ["A.高渗性利尿","B.血容量增多","C.新生的肾小管吸收功能尚未完善","D.抗利尿激素分泌减少","E.新生的肾小球滤过功能尚未完善"]
试述有排卵的妇女孕激素的周期性变化。