下列哪种血管中进行血液与组织细胞间的物质交换（ ）
A．动脉
B．毛细血管
C．大静脉
D．小静脉
人体内的血管有动脉血管、静脉血管、毛细血管三种类型．其中动脉血管管壁厚，弹性最大，管腔较小，血流速度快，其功能为将血液从心脏输送到全身各处去；静脉血管管壁较薄，弹性较小，管腔大，血流速度慢，其功能为将血液从全身各处输送到心脏去；毛细血管管壁最薄，只有一层上皮细胞构成，管腔最小，只允许红细胞呈单行通过，血流速度极慢，数量最多，利于与组织细胞进行物质交换．因此进行血液与组织细胞间的物质交换的血管是毛细血管．
故选B
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