Actually spelled "vertebrae" for plural, the average human has 5 (five) of them. You, my dear, are an anomaly having an extra to total 6. Very interesting!
2007-03-13 06:50:02
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answer #1
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answered by longleggedfirecracker 3
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A sixth lumbar vertebra
One of the reasons for the confusion is that some people, approximately 10% of adults, have a congenital anomaly in their lower back. One of the most common anomalies is the presence of a sixth lumbar vertebra. Having one extra lumbar vertebra provides no advantage or disadvantage to the individual and is rarely a cause of back problems, but it can create some confusion. For example:
Radiologists commonly count down from the last rib when numbering the lumbar vertebral bodies.
Surgeons on the other hand, count up from the sacrum when numbering the lumbar vertebrae.
Neither method of labeling lumbar vertebrae is incorrect, but obviously it can create confusion. For an individual with 5 vertebral bodies, they would be in agreement when labeling the L4-L5 level. If the individual has 6 lumbar vertebrae, however, the radiologist would typically refer to the lowest level as L6-S1 and the level above that L5-L6, which in the surgeon’s mind, would be correctly labeled L4-L5.
It is obviously very important to clearly identify the location of lumbosacral anomalies in order to avoid injection or surgical exposure of the incorrect level. This becomes particularly important for minimally invasive procedures. A physical exam and complementary imaging studies, such as an MRI scan and x-ray, can help improve the accuracy and the communication of the diagnosis.
http://www.spine-health.com/topics/anat/confusion/confusion04.html
2007-03-13 06:59:27
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answer #2
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answered by Larry62 5
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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 spinal column. In most mammals, the lumbar region of the spine curves outward; this is called lordosis.
The actual spinal cord 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.
As u have got 6, u r an exception.
2007-03-13 07:32:36
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answer #3
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answered by Halle 4
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Lumbar vertebrae: There are 5 lumbar vertebrae. The lumbar vertebrae are situated between the thoracic vertebrae and the sacral vertebrae in the spinal column. It could mean you have one extra vertebrae in you spinal column, but it could also mean they read your film wrong and were looking at the lower vertebrae of your sacrum and pelvic regions. I would ask for clarification, and definitely recommend seeing a Chiropractor who specializes in diseases/disorders of the spine.
2007-03-13 06:51:36
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answer #4
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answered by gagirl2c 3
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