Blood vessels are pipes that carry blood in the circulatory system. The blood vessels that carry blood away from the heart are arteries. The blood vessels that carry blood back to the heart are veins. Capillaries are located between the vein and the artery to provide blood to the tissue.
血管是在循环系统中携带血液的管道。 从心脏带走血液的血管是动脉。 将血液带回心脏的血管是静脉。 毛细血管位于静脉和动脉之间，为组织提供血液。