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Lumbar

In tetrapod anatomy, lumbar is an adjective that means of or pertaining to the abdominal segment of the torso, between the diaphragm and the sacrum.

Naming and location edit

The lumbar region is sometimes referred to as the lower spine, or as an area of the back in its proximity.

In human anatomy the five lumbar vertebrae (vertebrae in the lumbar region of the back) are the largest and strongest in the movable part of the spinal column, and can be distinguished by the absence of a foramen in the transverse process, and by the absence of facets on the sides of the body. In most mammals, the lumbar region of the spine curves outward.

Description edit

The actual spinal cord terminates between vertebrae one and two of this series, called L1 and L2. The nervous tissue that extends below this point are individual strands that collectively form the cauda equina. In between each lumbar vertebra a nerve root exits, and these nerve roots come together again to form the largest single nerve in the human body, the sciatic nerve. The sciatic nerve runs through the back of each leg and into the feet. This is why a disorder of the low back that affects a nerve root, such as a spinal disc herniation, can cause pain that radiates along the sciatic nerve (sciatica) down into the foot.

Muscles edit

There are several muscles in the low back that assist with rotation, flexibility and strength. These muscles are susceptible to injury, especially while lifting heavy objects, or lifting while twisting. A low back muscle strain can be extremely painful but will usually heal within a few days or weeks.

Body weight burden edit

The lumbar portion of the spine bears the most body weight and also provides the most flexibility, a combination that makes it susceptible to injury and wear and tear over time. This is why low back pain is so prevalent.[1]

See also edit

References edit

  1. ^ Watson, Stephanie. "Top Causes of Low Back Pain". WebMD. Retrieved 27 December 2015.

lumbar, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, january, 2017, lear. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Lumbar news newspapers books scholar JSTOR January 2017 Learn how and when to remove this message In tetrapod anatomy lumbar is an adjective that means of or pertaining to the abdominal segment of the torso between the diaphragm and the sacrum Contents 1 Naming and location 2 Description 3 Muscles 4 Body weight burden 5 See also 6 ReferencesNaming and location editThe lumbar region is sometimes referred to as the lower spine or as an area of the back in its proximity In human anatomy the five lumbar vertebrae vertebrae in the lumbar region of the back are the largest and strongest in the movable part of the spinal column and can be distinguished by the absence of a foramen in the transverse process and by the absence of facets on the sides of the body In most mammals the lumbar region of the spine curves outward Description editThe actual spinal cord terminates between vertebrae one and two of this series called L1 and L2 The nervous tissue that extends below this point are individual strands that collectively form the cauda equina In between each lumbar vertebra a nerve root exits and these nerve roots come together again to form the largest single nerve in the human body the sciatic nerve The sciatic nerve runs through the back of each leg and into the feet This is why a disorder of the low back that affects a nerve root such as a spinal disc herniation can cause pain that radiates along the sciatic nerve sciatica down into the foot Muscles editThere are several muscles in the low back that assist with rotation flexibility and strength These muscles are susceptible to injury especially while lifting heavy objects or lifting while twisting A low back muscle strain can be extremely painful but will usually heal within a few days or weeks Body weight burden editThe lumbar portion of the spine bears the most body weight and also provides the most flexibility a combination that makes it susceptible to injury and wear and tear over time This is why low back pain is so prevalent 1 See also editBack belts Lumbar hyperlordosis Lumbar puncture Lumbar vertebrae Loin also called lumbus LumbagoReferences edit Watson Stephanie Top Causes of Low Back Pain WebMD Retrieved 27 December 2015 Retrieved from https en wikipedia org w index php title Lumbar amp oldid 1185177894, wikipedia, wiki, book, books, library,

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