Superior vena cava
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| Vein: Superior vena cava | |
|---|---|
| Anterior (frontal) view of the opened heart. White arrows indicate normal blood flow. | |
| Latin | v. cava superior |
| Gray's | subject #172 666 |
| Source | brachiocephalic vein, azygous vein |
| MeSH | Vena+Cava,+Superior |
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Overview
The superior vena cava is a large, yet short vein that carries de-oxygenated blood from the upper half of the body to the heart's right atrium.
It is formed by the left and right brachiocephalic veins, (also referred to as the innominate veins) which receive blood from the upper limbs and the head and neck, behind the lower border of the first right costal cartilage. The azygous vein (which receives blood from the rib cage) joins it just before it enters the right atrium, at the upper right front portion of the heart.
In the adult, no valve separates the superior vena cava from the right atrium. As a result, the (right) atrial and (right) ventricular contractions are conducted up into the internal jugular vein and, through the sternocleidomastoid muscle, can be seen as the jugular venous pressure. In tricuspid valve regurgitation, these pulsations are very strong.
Additional images
The brachiocephalic veins, superior vena cava, inferior vena cava, azygos vein and their tributaries |
See also
eu:Goiko kaba
fr:Veine cave supérieure
it:Vena cava superiore
nl:Vena cava superiorsk:Horná dutá žila
sr:Горња шупља вена
fi:Yläonttolaskimo
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .


