孕妇血清绒毛膜促性腺激素(HCG)浓度达高峰是在妊娠A.5~7周B.8~10周C.11~13周D.14~16周E.17~19周

作者: rantiku 人气: - 评论: 0
问题 孕妇血清绒毛膜促性腺激素(HCG)浓度达高峰是在妊娠
选项 A.5~7周 B.8~10周 C.11~13周 D.14~16周 E.17~19周
答案 B
解析 :人绒毛膜促性腺激素(HCG)是由合体滋养细胞分泌的糖蛋白激素,受精后第6日受精卵滋养层形成时,开始分泌微量HCG。于妊娠早期分泌量增加很快,约2日即增长一倍,至妊娠8~10周血清浓度达最高峰,为50~100kU/L,持续10日左右迅速下降,至妊娠中晚期血清浓度仅为峰值的10%,持续至分娩。分娩后若无胎盘残留,于产后2周消失。

猜你喜欢

发表评论
更多 网友评论0 条评论)
暂无评论
错误啦!

错误信息

  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
  • 文件: /twcms/kongphp/cache/cache_redis.class.php
  • 位置: 第 85 行
    <?php echo 'KongPHP, Road to Jane.'; ?>