子宫动脉来自()。 ["髂总动脉","腹主动脉","腹下动脉","髂内动脉","髂外动脉"]
有关受精过程正确的是() ["卵子完成第二次减数分裂形成卵原核后由卵巢排出","精子获能的主要部位是阴道","获能的精子与卵子相遇时发生顶体反应","受精过程在排卵后12小时内完成","精原核和卵原核融合,标志受精过程的开始"]
有关受精的描述错误的是() ["获能的精子与次级卵母细胞相结合形成受精卵的过程称受精","受精过程发生在输卵管壶腹部与峡部连接处","多个精子可同时穿过透明带与次级卵母细胞融合","输卵管粘连可干扰受精卵形成,导致不孕","单倍体的卵原核与精原核融合后形成二倍体的受精卵"]
颗粒细胞上有其受体,结合后可激活芳香化酶活性() ["雌激素","孕激素","雄激素","FSH","LH"]
子宫有几对韧带维持其正常位置?() ["1对","2对","3对","4对","5对"]
生态需水