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能够保护中枢系统,选择性摄取外来物质()

单选题
2021-12-30 04:50
A、表观分布容积
B、血脑屏障
C、肝脏
D、肝肠循环
E、肾脏
查看答案

正确答案
B

试题解析
脑组织与血液之间存在屏障作用,对外来物质有选择性摄取的能力称为血脑屏障。表观分布容积是药动学的一个重要参数是将全血或血浆中药物浓度与体内药量联系起来的比例常数。参与药物代谢的酶中的微粒体酶系主要存在于肝脏。肾脏是人体排泄药物及其代谢物的最重要器官。肝肠循环是指在胆汁中排出的药物或代谢物,在小肠中转运期间重新吸收而返回门静脉的现象。

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