Compact bone's bony matrix is arranged into bone lamellae, which are circular layers of cell membrane that enclose central canals.
The central canal, also known as the central foramen or epithelium canal, is bordered by a layer of columns ependymal cells and reaches from the truncus medullaris in the lower back to the tail curve of the fourth ventricle. It depicts a piece of the original neural tube's lumen.
The central canal, sometimes referred to as the spinal midline or ependymal canal, runs through the spine and carries cerebrospinal fluid.
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