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The nervish seestem is the pairt o an ainimal that coordinates its actions an transmits signals tae an frae different pairts o its bouk. In vertebrates it conseests o twa main pairts, the central nervish seestem (CNS) an the peripheral nervish seestem (PNS). The CNS conseests o the harn an spinal cord. The PNS conseests mainly o nerves, which are enclosed bundles o the lang feebres or axons, that connect the CNS tae every ither pairt o the bouk.

Nervish seestem
TE-Nervous system diagram.svg
The human nervish seestem.
Laitin systema nervosum
MeSH D009420
FMA 7157
Anatomical terminology