ORTHOCLICK / SCIENCE PHOTO LIBRARY ORTHOCLICK / SCIENCE PHOTO LIBRARY
This lumbar spine image is viewed in the supine position: vertebral bodies (upward) and spinous processes (downward). The lumbar nerve roots are seen exiting the neuroforamen and dividing into the posterior rami and ventral rami. Multiple branches of the posterior rami are seen adjacent to the spinous process that ultimately supply the lumbar paraspinal muscles. The edge of the dural sac is observed to the far left of this image.
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