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Lab 4, Page 3 of 32
The diagram shows the external landmarks of the spinal cord at low thoracic levels. Locate the following longitudinal fissures and sulci, which divide the spinal cord: anterior median fissure, posterior median sulcus, posterolateral sulcus, posterior intermediate sulcus, and anterolateral sulcus. Note that the posterior intermediate sulcus is present only above level T6.
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