下图是人体某组织结构示意图,①②③④分别表示人体内不同部位的

下图是人体某组织结构示意图,①②③④分别表示人体内不同部位的液体。据图判断下列说法正确的是(  )

A.人体的内环境是由①②③④组成的

B.血浆中的氧进入组织细胞的途径是②→③→④

C.内环境稳态的维持依赖于各器官系统的协调活动

D中含激素、血红蛋白、乳酸、CO2等物质

答案

B

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