The types of the cranial nerves >I,ⅡandⅧare purely sensory >Ⅲ，V,I,ⅪandXⅫare purely motor; Ⅲ，V,VI control eye movement XI control sternocleidomastoid and trapeziums; XII control muscles of tongue >V、Ⅶ、X、X are mixed nerves >Ⅲ、Ⅶ、X、X carry parasympathetic fibersⅠ, Ⅱ and Ⅷ are purely sensory  Ⅲ, Ⅳ, Ⅵ, Ⅺ and Ⅻ are purely motor; Ⅲ, Ⅳ, Ⅵ control eye movement Ⅺ control sternocleidomastoid and trapeziums; Ⅻ control muscles of tongue  Ⅴ、Ⅶ、Ⅸ、Ⅹ are mixed nerves  Ⅲ 、 Ⅶ、Ⅸ、Ⅹ carry parasympathetic fibers The types of the cranial nerves