Having a direct nerve pathway from the central nervous system to muscles without intermediate ganglia; relating to advanced cephalopod nervous systems.
From eu- 'well' plus neuron 'nerve,' with -ous meaning 'having the quality of.' This anatomical term describes the streamlined neural architecture of intelligent marine mollusks.
Squids are 'euthyneurous,' which gives them reaction times faster than many fish—one reason they can hunt successfully in the dark ocean and respond instantly to threats and prey.
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