Copy Right- Hong my-Fudan University Spinal pia mater Thin. rich in blood vessel, situated on the surface of spinal cord extend to sulcus fissure, between ant post root dentate lig. are seen Dentate lig Spinal pia mater Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan UniversityCopy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Spinal pia mater Thin,rich in blood vessel, situated on the surface of spinal cord & extend to sulcus & fissure, between ant. & post. root. dentate lig. are seen. Dentate lig. Spinal pia mater