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