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