Accessory Hemiazygos Vein (Noun)
Meaning
A vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein.
Classification
Nouns denoting body parts.
Examples
- The accessory hemiazygos vein is a tributary of the azygos vein, which it joins to form a larger venous pathway.
- During thoracic surgery, the accessory hemiazygos vein may be encountered and requires careful ligation to prevent bleeding.
- Anatomical studies have shown that the accessory hemiazygos vein is formed by the confluence of the 4th to 7th posterior intercostal veins.
- The accessory hemiazygos vein plays a crucial role in draining blood from the posterior chest wall and empties into the azygos vein.
- In some individuals, the accessory hemiazygos vein may be absent or variant, which can have implications for surgical planning and patient care.