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They don't have a central nervous system. Just 2 ganglia.
intrinsic eye muscles are controlled by the autonomic nervous system
central
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The nervous system is made of these kinds of cells... -smooth muscle cells -nerve cells
No, there's some kind of doohickey that connects them.
motor output
A simple division into central and peripheral nerves is the kind of nervous system that a grasshopper has. The central nervous system relies upon a central nerve cord whose chain of neurons, known as ganglia, are segment-specific in control. The peripheral nervous system requires coordination of a motor system to tell muscles how to act and of a sensory system to tell the grasshopper of in- and out-of-body events.
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Neurologists study the nervous system.
neuron
name at least 5 common ailements of the nervous system and describe each kind