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  • What are reflex actions? Give two examples. Explain a reflex arc.

What are reflex actions? Give two examples. Explain a reflex arc.

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Solution:
The sudden involuntary movement in a voluntary organ; in response to a stimulus; is called reflex action.
Examples of reflex action:

  • (a) Moving your hand away from a hot pan.
  • (b) Blinking of eyes

Reflex Arc: The reflex arc is a path of electrical impulse during a reflex action. It is composed of sensory neurons,the  spinal cord, motor neurons and
muscle.

Steps of the reflex arc
• The sensory neuron picks signals from the stimulus and carries the signals to the spinal cord.
• Spinal cord processes the signals and sends the message through the motor neuron.
• Motor neuron transmits the signals to the effector's muscle so that the muscle can take immediate action

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