形成了外周神经系统。

These are called the peripheral nervous system.

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第二大脑，约有一亿神经细胞，比脊髓或外周神经系统都要多，格申说。

The second brain contains some 100 million neurons, more than in either the spinal cord or the peripheral nervous system, Gershon says.

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外周神经系统本身具有再生的能力，但肌肉中神经支配的恢复常常不理想，结果限制了肌肉功能的恢复。

The peripheral nervous system has the intrinsic capacity to regenerate but the reinnervation of muscles is often suboptimal and results in limited recovery of function.

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