(Film of 1) stiff backbone: Be located in the outerest, qualitative tough, go up to be linked together with hard meninx, in the occipital large hole place and periosteum cicatrization;

• (1)硬脊膜：位于最外层，质坚韧，上与硬脑膜相连，在枕骨大孔处与骨膜愈合；