A region of gray matter that resembles a butterfly is surrounded by white matter in a cross-section of the spinal cord.
The cervical, upper abdomen, lumbar, & sacral regions are the four divisions of the spinal cord. Visual distinctions can be detected between the various chord areas.
The spinal cord may be split into four sections based on its rostrocaudal location: cervical, thorax, lumbar, and sacral. Two of these are distinguished by an upper (cervical) as well as a lower (lumbar) expansion.
The spinal cord extends the central nervous system (CNS), which is composed of the spine and the brain. The spinal cord leaves where it begins at the base of the brain stem in the lower back, where it tapers sufficiently to create a cone referred to as the conus medullaris.
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