Lumbar
Lumbar
Lumbar (/ˈlʌmbər/; from the Latin lumbus meaning 'loin') refers to the area of the spine between the diaphragm and the sacrum. The lumbar spine typically consists of five vertebrae, and it supports much of the weight of the upper body.
Etymology
The term "lumbar" is derived from the Latin word lumbus, which translates to 'loin'. This is reflective of the lumbar region's location in the lower back, near the loins.
Anatomy
The vertebrae in the lumbar region are the largest of the entire spine, designed to hold increasing forces of weight. These vertebrae are designated L1 through L5, with L1 being closest to the thoracic vertebrae and L5 situated adjacent to the sacrum.
The lumbar region is also home to the lumbar plexus, a network of nerve fibers that provides motor and sensory function to the lower part of the body.
Related Terms
- Lumbar vertebrae: The individual bones that make up the lumbar spine.
- Lumbar puncture: A medical procedure where a needle is inserted into the lumbar region to collect cerebrospinal fluid.
- Lumbar lordosis: An excessive inward curve of the lumbar spine.
- Lumbar disc disease: A condition where the discs between the lumbar vertebrae deteriorate or herniate.
See Also
External links
- Medical encyclopedia article on Lumbar
- Wikipedia's article - Lumbar
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