下列有关肾脏结构与功能的叙述不正确的是（ ）。
- A.肾单位是肾脏结构和功能的基本组成单位
- B.肾脏结构中对血液有过滤作用的是肾小囊内壁和肾小球毛细血管壁
- C.肾动脉中的血液流经肾脏后由肾静脉流出，发生的变化是废物减少、氧气增加
- D.肾脏的结构中，具有重吸收作用的是肾小管
正确答案及解析
正确答案
解析
肾脏的作用主要是排出血液中的“废物”，但不能使血液中的含氧量增加，所以C项错误。
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