VENA AZYGOS Meaning and
Definition
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The vena azygos is a major vein in the human body that functions as a crucial part of the venous system. It is defined as a solitary vessel located on the right side of the vertebral column within the thorax, specifically in the posterior mediastinum region. The vena azygos is responsible for draining deoxygenated blood from various regions and organs of the body and ultimately carrying it into the superior vena cava, which is one of the major veins that returns blood to the heart.
The vena azygos plays a significant role in the venous drainage of the thorax and abdomen. It receives blood from several sources, including the posterior intercostal veins, which drain the intercostal spaces, and the mediastinal veins. Additionally, it receives blood from the esophageal veins, bronchial veins, and pericardial veins, amongst others. The vena azygos also receives blood from the hemiazygos vein, which is a smaller vein running parallel to it on the left side.
Understanding the anatomical course and connections of the vena azygos is crucial in medical disciplines such as radiology, surgery, and cardiology. Anomalies or variations in the anatomy of the vena azygos may have clinical implications and can be relevant for diagnosing certain conditions or planning surgical interventions. Overall, the vena azygos serves as a vital component of the venous system, facilitating the return of deoxygenated blood to the heart for reoxygenation and distribution throughout the body.
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Azygos vein, v. azygos major, arises from the right ascending lumbar vein or the vena cava inferior, ascends through the aortic orifice of the diaphragm, lies in the posterior mediastinum, and terminates in the vena cava superior.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for VENA AZYGOS
- cena azygos
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- vena zzygos
Etymology of VENA AZYGOS
The word "Vena Azygos" is of Latin origin.
The term "vena" comes from the Latin word "vena" meaning "vein". It is derived from the Proto-Indo-European root "*wénh₁os". This root refers to a channel, duct, or vessel that carries fluids, particularly blood in the context of veins.
The word "azygos" also comes from Latin and is derived from the Greek word "ázygos" (αζυγος), meaning "unyoked" or "unequal". It is believed to have been formed by the combination of the prefix "a-" (meaning "not" or "without") and "zygos" (meaning "yoke" or "pair").
Therefore, "Vena Azygos" literally translates to "unequal vein" or "vein without a pair".
Similar spelling words for VENA AZYGOS
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