Peripheral Nervous System / Central Nervous System

The relationship between the spinal cord, the spinal roots, and the meninges is illustrated here. The surface of the spinal cord is covered by pia mater. Between the pia mater and web-like arachnoid mater is the subarachnoid space which contains CSF. The thick, collagenous dura mater is continuous with the epineurial covering of the spinal nerves. Also note the dorsal and ventral roots of the spinal nerve and the artifactually widened subdural space. Spinal nerve rootlets are also seen in the subarachnoid space which contains CSF. UCLA Histology Collection