Gottschall J, Gruber H
Anat Embryol (Berl). 1977 Aug 9;151(1):63-9. doi: 10.1007/BF00315298.
Reinnervation studies of the diaphragm led us to reinvestigate the normal anatomy of the phrenic nerve of the rat. The phrenic nerve originates from the cervical nerve roots C4 and C5. In 16 out of 19 normal rats an accessory phrenic nerve was observed receiving its segmental fibres from C6. The number of myelinated axons of the accessory phrenic nerve varied from 41 to 101 (mean: 64.3, i.e. about 15% of the average number of axons in the common phrenic nerve). The accessory phrenic nerve innervates the dorsal part of the costal and the lateral part of the crural region, whereas the remaining parts of the hemidiaphragm are supplied by the segments C4 and C5. There is no evidence for any additional contribution to the motor innervation of the diaphragm from intercostal nerves.
膈的神经再支配研究促使我们重新研究大鼠膈神经的正常解剖结构。膈神经起源于颈神经根C4和C5。在19只正常大鼠中的16只中，观察到一条副膈神经，它从C6接收节段性纤维。副膈神经的有髓轴突数量在41至101之间（平均：64.3，即约占膈总神经平均轴突数量的15%）。副膈神经支配肋部的背侧部分和膈脚部的外侧部分，而半膈的其余部分由C4和C5节段供应。没有证据表明肋间神经对膈的运动神经支配有任何额外贡献。
