One of the minute blood vessels that connect arterioles and venules. These blood vessels form an intricate network throughout the body for the interchange of various substances, such as oxygen and carbon dioxide, between blood and tissue cells.

• 毛细管连接动脉和小静脉的纤细的血管中的一条。这些血管在整个体内形成一个复杂的网络从而能使各种物质，如氧气和二氧化碳，在血液和组织细胞间相互交换