In anatomy, lumbar is an adjective that means of or pertaining to the abdominal segment of the torso, between the diaphragm and the sacrum (pelvis). The five 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; this is called lordosis. Image File history File links Lumbar_region_in_human_skeleton. ... Human heart and lungs, from an older edition of Grays Anatomy. ... In grammar, an adjective is a word whose main syntactic role is to modify a noun or pronoun (called the adjectives subject), giving more information about what the noun or pronoun refers to. ... The abdomen (from the Latin word meaning belly) is the part of the body between the pelvis and the thorax. ... The human torso Torso is an anatomical term for the greater part of the human body without the head and limbs. ... In the anatomy of mammals, the diaphragm is a shelf of muscle extending across the bottom of the ribcage. ... For the record label, see Sacrum Torch. ... The pelvis (pl. ... A diagram of a thoracic vertebra. ... The spinal cord is a part of the vertebrate nervous system that is enclosed in and protected by the vertebral column (it passes through the spinal canal). ... Subclasses & Infraclasses Subclass †Allotheria* Subclass Prototheria Subclass Theria Infraclass †Trituberculata Infraclass Metatheria Infraclass Eutheria Mammals (class Mammalia) are warm-blooded, vertebrate animals characterized by the presence of sweat glands, including those that produce milk, and by the presence of: hair, three middle ear bones used in hearing, and a neocortex... Lordosis is a term used to describe the direction of the curvature of the five lumbar and seven cervical vertebrae of the vertebral column. ...

The actual spinal cord (medulla spinalis) terminates between vertebra 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. The Spinal cord nested in the vertebral column. ... A diagram showing the CNS: 1. ... The cauda equina is a structure within the lower end of the spinal column, that consists of nerve roots and rootlets from above. ... Nerves (yellow) Nerves redirects here. ... Physical Features of the Human Body The human body is the entire physical structure of a human organism. ... The sciatic nerve (also known as the ischiatic nerve) is a large nerve that runs down the lower limb. ... A spinal disc herniation, incorrectly called a slipped disc, is a medical condition affecting the spine, in which a tear in the outer, fibrous ring (annulus fibrosus) of an intervertebral disc allows the soft, central portion (nucleus pulposus) to bulge out. ... Sciatica is pain caused by general compression and/or irritation of one of five nerve roots that are branches of the sciatic nerve. ...

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. For other uses of Muscles, see Muscles (disambiguation). ... A strain is an injury which occurs to a muscle in which the muscle fibers tear as a result of overstretching. ...

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.

See also

• Car seat and lumbar support
• Low back pain
• Lumbar Puncture

this is part of ur body if u dident kno A car seat usually refers to a small seat secured to the seat of an automobile equipped with safety harnesses to hold children in the event of a crash. ... See also back pain Low back pain is a common musculoskeletal disorder which affects the lumbar segment of the spine. ... A patient undergoes a lumbar puncture at the hands of a neurologist. ...

External links

• Lower back pain information

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knock knock (whos there) cargo (cargo who) car go beep beep Image File history File links Download high-resolution version (609x1165, 138 KB) Plastische Anatomie des menschlichen Körpers für Künstler und freunde der kunst von Dr. Julius Kollmann o. ... The musculoskeletal system (also known as the locomotor system) is an organ system that gives animals the ability to physically move using the muscles and skeletal system. ...