Results: (1) ATPase: In rats, rabbits and humans, the fibers of the musculus semispinalis capitis were multi sided or ellipsoid and were divided into type I and type II, which accounted for 60% and 40% respectively.

• 结果 :( 1) ATP酶染色 ,大鼠、家兔、正常人颈后部肌肉肌纤维可分为 I型和 II型纤维 ,呈多边形或椭圆形 ,分别约占 60%25和 4 0%25。