Question

Represent the reflex arc with the help of a neat flow chart.

Answer 1

Reflex arc is the pathway of nerve impulses that are generated at the receptor due to stimulus to reach the effector organ when a reflex action is performed.

It has following components:

• A receptor which receives the stimulus.
• Sensory or nerve fibres which transmit sensory impulses generated by the receptor, to the central nervous system.
• Part of central nervous system which may be spinal cord or brain
• Motor or efferent nerve fibres which carry the motor impulses generated in the central nervous system, to specific effectors.
• Effector organ which is activated by the motor impulse to response to the stimulus.