Gray matter The laminas:脊髓灰质板层 Spinal cord gray matter is arranged in layers,there are 10 Rexed's lamina The posterior horn is formed by lamina I to VI, The intermediate zone corresponding to laminaⅧ The anterior horn is 2XM W composed laminaeⅧandⅨX lamina X is the gray matter surrounding the central canalGray matter The posterior horn is formed by lamina Ⅰ to Ⅵ, The intermediate zone corresponding to lamina Ⅶ, The anterior horn is composed laminae Ⅷ and Ⅸ, lamina Ⅹ is the gray matter surrounding the central canal. The laminas: 脊髓灰质板层 Spinal cord gray matter is arranged in layers, there are 10 Rexed’s lamina: