receives blood from lower limbs and abdominal organs and empties into the posterior part of the right atrium of the heart; formed from the union of the two iliac veins
同义词：inferior vena cava
postcava详细解释
post.ca.va n.（名词）A large vein that returns blood to the heart from the lower half of the body; the inferior vena cava.（畜类的）后腔静脉：将血液从下半身送回心脏的大静脉；低级腔静脉 【引伸】 postca.val adj.（形容词）
