spinal canal
(SPY-nul kuh-NAL)
The narrow, fluid-filled space in the spinal column (the bones, muscles, tendons, and other tissues that reach from the base of the skull to the tailbone). The spinal cord runs through the spinal canal.
The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.
Updates regarding government operating status and resumption of normal operations can be found at opm.gov.