| Word | Definitions | Synonyms |
|---|---|---|
| postcava | (noun) 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 | Synonyms: inferior vena cava |
| precava | (noun) receives blood from the head and arms and chest and empties into the right atrium of the heart; formed from the azygos and both brachiocephalic veins | Synonyms: superior vena cava |