Simple Description

A neuronal pathway that does not require the brain to bring about the response

Further Detail

Reflex arcs occur where th receptor and the effector are located close to each other (like each end of an arc) and usually only involve a sensory neurone, relay neurone (in the spinal cord) and a motor neurone.

Related Words:

• Effector
• Central nervous system
• Motor neurone
• Sensory neurone
• Relay neurone

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