大だい静じょう脈みゃく

noun

vena cava

Anatomical term for the large veins that return deoxygenated blood to the heart. Used in medical and biological contexts.

• 大だい静じょう脈みゃくは、体からだの各かく部ぶから心しん臓ぞうへ血けつ液えきを戻もどす太ふとい血けっ管かんです。

  The vena cava is a large blood vessel that returns blood from various parts of the body to the heart.