vein 静脉 Any of the tubular branching vessels that carry blood from the capillaries toward the heart. BTO:0000234 EHDAA:486 EMAPA:16240 EV:0100031 FMAID:50723 James Malone MA:0000066 MAT:0000037 Subdivision of venous tree (organ) which consists of branching sets of tubes (venous trunks) that form a tree; together with other venous trees (organ part), it constitutes a venous tree (organ). Examples: subclavian venous tree, jugular tree, extrahepatic portal tree, common iliac venous tree. TAO:0000082 URI: http://www.ebi.ac.uk/cellline#vein Venous subtree Venous tree organ part Venous vessel Vessels that carry blood to the heart. XAO:0000115 ZFA:0000082 venous system 将血液从毛细血管带向心脏的任何管状分支血管。 将血液运送到心脏的血管 静脉子树 静脉树器官部分 静脉树（器官）的细分，由分支的一套管（静脉干）组成，这套管形成一棵树;与其他静脉树（器官部分）一起构成静脉树（器官）。例如：锁骨下静脉树，颈静脉树，肝外门静脉树，髂总静脉树。 静脉系统 静脉血管 blood vessel 血管(blood vessel)