Question

What is reflex action ?Explain how it occurs?

Answer 1

Reflex action:

1. Reflex action is a sudden and involuntary response to stimuli.
2. Pulling our hands away immediately after touching a hot or cold object is an example of a reflex action.

Events of reflex action:

1. It begins with receptor detecting the stimulus or a sudden change in the environment, the stimulus is received from a sensory organ.
2. Then, the sensory neuron sends a signal to the relay neuron.
3. This is followed with the relay neuron sending the signal to the motor neuron.
4. The motor neuron sends a signal to the effector.
5. The effector produces an instantaneous response.
6. Example, pulling away of the hand when we touch the hot or cold objects.