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== Nervous system神经系统 ==

== Nervous system神经系统 ==

[[File:Anatomy of a Neuron with Synapse.png|thumb|upright=1.15|Schematic of an anatomically accurate single pyramidal neuron, the primary excitatory neuron of cerebral cortex, with a synaptic connection from an incoming axon onto a dendritic spine.]]

[[File:Anatomy of a Neuron with Synapse.png|thumb|upright=1.15|Schematic of an anatomically accurate single pyramidal neuron, the primary excitatory neuron of cerebral cortex, with a synaptic connection from an incoming axon onto a dendritic spine.解剖学上准确的单个锥体神经元的示意图，大脑皮层的主要兴奋性神经元，具有从传入轴突到树突棘的突触连接。]]

{{unreferenced section|date=December 2020}}

{{unreferenced section|date=December 2020}}

Neurons are the primary components of the nervous system, along with the  [[glial cells]] that give them structural and metabolic support. The nervous system is made up of the [[central nervous system]], which includes the [[brain]] and [[spinal cord]], and the [[peripheral nervous system]], which includes the [[autonomic nervous system|autonomic]] and [[somatic nervous system]]s. In vertebrates, the majority of neurons belong to the [[central nervous system]], but some reside in peripheral [[ganglion|ganglia]], and many sensory neurons are situated in sensory organs such as the [[retina]] and [[cochlea]].

Neurons are the primary components of the nervous system, along with the  [[glial cells]] that give them structural and metabolic support. The nervous system is made up of the [[central nervous system]], which includes the [[brain]] and [[spinal cord]], and the [[peripheral nervous system]], which includes the [[autonomic nervous system|autonomic]] and [[somatic nervous system]]s. In vertebrates, the majority of neurons belong to the [[central nervous system]], but some reside in peripheral [[ganglion|ganglia]], and many sensory neurons are situated in sensory organs such as the [[retina]] and [[cochlea]].