Accessory hemiazygos vein
- Accessory hemiazygos vein
Infobox Vein
Name = PAGENAME
Latin = vena hemiazygos accessoria
GraySubject = 172
GrayPage = 664
Caption = Diagram showing completion of development of the parietal veins. (Accessory hemiazygos vein visible at center-left.)
Caption2 = The venæ cavæ and azygos veins, with their tributaries.
DrainsFrom =
Source =
DrainsTo = hemiazygos vein, azygos vein
Artery =
MeshName =
MeshNumber =
DorlandsPre = v_05
DorlandsSuf = 12850481
The accessory hemiazygos vein (vena azygos minor superior) is a vein on the left side of the vertebral column that generally drains the fifth through eighth intercostal spaces on the left side of the body.
tructure
The accessory hemiazygos vein varies inversely in size with the left superior intercostal vein.
It receives the posterior intercostal veins from the 4th, 5th, 6th, and 7th intercostal spaces between the left superior intercostal vein and highest tributary of the hemiazygos vein; the left bronchial vein sometimes opens into it.
It either crosses the body of the eighth thoracic vertebra to join the azygos vein or ends in the hemiazygos.
When this vein is small, or altogether absent, the left superior intercostal vein may extend as low as the fifth or sixth intercostal space.
ee also
* Azygos vein
* Hemiazygos vein
External links
*
* - "Mediastinum: The Azygos Vein and Posterior Intercostal Veins"
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2010.
Look at other dictionaries:
accessory hemiazygos vein — n a vein that drains the upper left side of the thoracic wall, descends along the left side of the spinal column, and empties into the azygos or hemiazygos veins near the middle of the thorax … Medical dictionary
accessory hemiazygos vein — noun a vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein • Syn: ↑accessory hemiazygous vein, ↑vena hemiazygos accessoria • Hypernyms: ↑vein, ↑vena, ↑venous blood vessel … Useful english dictionary
accessory hemiazygous vein — noun a vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein • Syn: ↑accessory hemiazygos vein, ↑vena hemiazygos accessoria • Hypernyms: ↑vein, ↑vena, ↑venous blood vessel … Useful english dictionary
Hemiazygos vein — Infobox Vein Name = PAGENAME Latin = vena hemiazygos GraySubject = 172 GrayPage = 667 Caption = Diagram showing completion of development of the parietal veins. (Hemiazygos vein visible at center left.) Caption2 = The venæ cavæ and azygos veins,… … Wikipedia
hemiazygos vein accessory — vena hemiazygos accessoria … Medical dictionary
Vein — A blood vessel that carries blood low in oxygen content from the body back to the heart. The deoxygenated form of hemoglobin (deoxyhemoglobin) in venous blood makes it appear dark. Veins are part of the afferent wing of the circulatory system… … Medical dictionary
Azygos vein — Infobox Vein Name = PAGENAME Latin = vena azygos GraySubject = 172 GrayPage = 667 Caption = Superior vena cava, inferior vena cava, azygos vein and their tributaries. (Vena azygos labeled at center.) Caption2 = POSTERIOR VIEW: The position and… … Wikipedia
vena hemiazygos accessoria — noun a vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein • Syn: ↑accessory hemiazygos vein, ↑accessory hemiazygous vein • Hypernyms: ↑vein, ↑vena, ↑venous blood vessel … Useful english dictionary
vena hemiazygos accessoria — [TA] accessory hemiazygos vein: the descending intercepting trunk for the upper, often the fourth through the eighth, left posterior intercostal veins. It lies on the left side and at the eighth thoracic vertebra joins the hemiazygos vein or… … Medical dictionary
azygos vein — n any of a system of three veins which drain the thoracic wall and much of the abdominal wall and which form a collateral circulation when either the inferior or superior vena cava is obstructed esp a vein that receives blood from the right half… … Medical dictionary
