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一般教科书,对副神经的描述颇不一致。如对副神经脊髓根最下根在颈髓发出的平面问题,从C_5到C_6、C_7,写的很不一致。再如,副神经和颈神经(砷经根和前枝)之间的广泛联系,虽为各家所公认,但副神经(上、下部纤维)对胸锁乳突肌和斜方肌支配的分工状况以及副神经和颈神经对两肌支配的分工状况都没有详细的叙述。尤其是副神经和C_(3—4)神经对斜方肌的支配关系问题,还存在着较大的争论。有的学者(Clara,1959)认为C_(3—4)神经纤维专门支配斜方肌上部,副神经则支配斜方肌的中部和下部;而另一些学者(Monkad-Krohn,1954;DE Jong,1950)(引自[2])则认为C_(3—4)神经纤维专门支配斜方肌下部,副神经支配斜方肌的上部和中部。松野正彦和矢ケ崎久雄两氏(1956)曾对副神经根进行了形态学的调查,但也未能解决上述问题。有鉴于此,作者进行了一些调查工作,拟为解决在副神经方面存在的分歧找出一些形态学的根据。
General textbooks, description of the accessory nerve is quite inconsistent. Such as the nerve root of the inferior nerve root plane issue issued in the cervical cord, from C_5 to C_6, C_7, write very inconsistent. In another example, the extensive relationship between the accessory nerve and the cervical nerve (arsenic root and anterior branch) is recognized by various families but the accessory nerves (upper and lower fibers) dominate the sternocleidomastoid and trapezius muscles The division of labor and the division of labor between the accessory nerve and the cervical nerve on the two muscles are not described in detail. In particular, the dominance of the accessory nerve and the C_ (3-4) nerve on the trapezius muscle still exists. Some scholars (Clara, 1959) believe that C_ (3-4) nerve fibers specifically dominate the upper part of the trapezius, while the accessory nerves dominate the middle and lower part of the trapezius; others (Monkad-Krohn, 1954; DE Jong, 1950) (quoted in [2]) that C_ (3-4) nerve fibers specifically dominate the lower part of the trapezius, the parasympathetic innervation of the trapezius muscle and the middle. Masahiko Matsuno and Yagazaki Kusao two (1956) had the morphology of the parasitical nerve root, but also failed to solve the above problems. In view of this, the author conducted some investigations and proposed to find some morphological basis for resolving the differences in accessory nerves.