关于前列腺的说法正确的有() ["A．后方借直肠膀胱陷凹与直肠壶腹相邻","B．位于膀胱颈和尿生殖膈之间","C．尿道自底的前份穿入","D．射精管自底的后份穿入","E．周围有前列腺囊和鞘包裹"]
背景
关于阴部内动脉的说法正确的有() ["A．在管内发出2～3支肛动脉","B．走行于阴部管内","C．穿坐骨小孔人坐骨肛门窝","D．是坐骨肛门窝内的主要血管","E．在管前端分为会阴动脉和阴茎(蒂)动脉"]
当机体处于感染或其他应激反应时，外周血中增加的粒细胞主要来自() ["A．分裂池","B．成熟池","C．贮备池","D．循环池","E．边缘池"]
会阴神经支配哪些组织() ["A．会阴浅横肌","B．会阴深横肌","C．肛门外括约肌","D．肛提肌","E．以上都对"]
背景
