lumbar vein
Definition
Noun: 1. Anatomy: A vein that drains blood from the posterior (back) abdominal wall and the network of veins surrounding the lumbar vertebrae (the lumbar vertebral venous plexus). It is typically one of a series of four pairs of veins on each side of the body.
Usage
The term "lumbar vein" is used in medical, anatomical, and biological contexts to describe specific blood vessels. It is a precise anatomical term. * The lumbar veins accompany the lumbar arteries. * Surgeons must be cautious of the lumbar vein during spinal procedures. * Blockage in a lumbar vein can cause localized swelling.
Advanced Usage
- The lumbar veins are part of the azygos venous system, which is a key pathway for venous blood return in the trunk.
- In medical imaging, a dilated lumbar vein can sometimes be an indicator of underlying vascular pathology.
Variants and Related Words
- Lumbar veins (plural): The common form, referring to the set of veins (typically L1-L4).
- Ascending lumbar vein: A longer vertical vein that connects the common iliac vein to the azygos/hemiazygos veins, often formed by the interconnection of the lumbar veins.
Synonyms
- There are no direct common synonyms. In technical anatomical descriptions, it may be referred to by its specific segment (e.g., first lumbar vein, second lumbar vein).
Related Phrases
- Lumbar venous plexus: The network of veins surrounding the lumbar vertebrae that the lumbar veins drain.
- Drain into: The lumbar veins drain into the inferior vena cava or the ascending lumbar vein.
Noun
-
veins that drain the posterior body wall and the lumbar vertebral venous plexuses
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