Noun: vena hemiazygos accessoria
- A vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein
"The vena hemiazygos accessoria helps drain blood from the chest wall";
- accessory hemiazygos vein, accessory hemiazygous vein
Type of: vein, vena, venous blood vessel
Encyclopedia: Vena hemiazygos accessoria