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Question

What are the parts of a typical reflex arc?


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Solution

Reflex arc:

  1. A reflex arc is a path that a reflex takes from the stimulus to the sensory neuron to the motor neuron to the reflex muscle movement.
  2. The components of a typical reflex arc are as follows:
    • Receptors are dendrite ends or specialized receptor cells found in special sense organs that detect a stimulus.
    • Sensory neurons, also known as afferent neurons, are cells that transmit impulses to the central nervous system.
    • Relay neurons are another name for the interneuron, which acts as a processing center and carries nerve impulses from a sensory neuron to a motor neuron.
    • The central nodes of brain circuits known as interneurons are in charge of facilitating communication between sensory or motor neurons and the central nervous system (CNS).
    • Motor neurons, also known as efferent neurons, are cells that carry impulses away from the central nervous system.
    • Effectors are muscles or glands located outside of the central nervous system that performs a response.


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