Definition

Noun: 1. An artery supplying blood to the lower back region: One of a series of paired arteries (typically four or five pairs) that branch directly from the abdominal aorta. Their primary function is to supply oxygenated blood to the muscles and skin of the lower back (lumbar region), the vertebrae of the lower spine, and the spinal cord and its membranes within the spinal canal.

Examples of Usage

• Noun:
  • During the surgery, the surgeon carefully avoided the lumbar artery to prevent significant bleeding.
  • A blockage in a lumbar artery can cause pain and muscle weakness in the lower back.
  • The lumbar arteries are essential for supplying the posterior abdominal wall.

Advanced Usage

• "Arise from the abdominal aorta": This is the standard anatomical description of the origin of the lumbar arteries.
  • The right and left lumbar arteries arise from the posterior aspect of the abdominal aorta.
• "Paired lumbar arteries": Used to emphasize that these vessels exist symmetrically on both sides of the body.
  • The paired lumbar arteries course posteriorly behind the sympathetic trunk.

Variants and Related Words

• Lumbar (adj): Pertaining to the lower part of the back, between the ribs and the pelvis. Example:
• Artery (n): A blood vessel that carries oxygenated blood away from the heart to the body's tissues.

Synonyms

• There are no direct common synonyms for this specific anatomical term. In technical contexts, it may be referred to by its anatomical numbering (e.g., ).

Related Phrases

• Lumbar artery injury: A medical condition involving damage to this blood vessel, often due to trauma or surgical complication.
  • A lumbar artery injury can lead to a retroperitoneal hematoma.
• Lumbar artery branch: Refers to a smaller vessel diverging from a main lumbar artery.
  • A spinal branch of the lumbar artery enters the vertebral canal.

Noun

1. one of four or five pairs of arteries that originate in the abdominal aorta and supply the lumbar vertebrae and the back muscles and abdominal wall