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★脊髓(jǐ suǐ)圆锥Conus medullaris-the lower pyramid end of spinal cord
★终丝Filum terminale-a delicate filament, about 20 cm in length, prolonged downward from the apex of the conus medullaris to the back of the first segment of the coccyx, continuous above with that of the pia mater.
to Vertebral Numbers
Spinal segments
Vertebral levels (spines)
C1~C4 C5~T4
Lie opposite the corresponding vertebrae
One lower in number than corresponding vertebrae
Brain stem脑干
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Major Divisions of the Peripheral Nervous System
脑神经(shénjīng)Cranial nerves (12 pairs) 脊神经(shénjīng)Spinal nerves (31 pairs) 内脏神经(shénjīng)Visceral nerves Visceral sensory nerve Visceral motor nerve Sympathetic part 交感神经(shénjīng) Parasympathetic part 副交感神经
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