Question

Suggest four reflex actions of the human body. Explain how reflex arc is same in all of them

Answer 1

Answer:

reflex actions are immediate and involuntary responses towards a stimulus.

these type of actions are under the control of the spinal cord.

1. withdrawal of hand when we come in contact with a sharp object.
2. sudden blinking of eyes when some dust particles enter the eyes.
3. withdrawal of hands when we come in contact with fire.
4. the pupil of the eye changes size according to the light.

the reflex arc is the pathway of impulse.

this occurs in the same way for all stimuli .

example. when we come in contact with fire or any other stimuli there are receptors in all parts of our body the to receive signal from receptor. the signal reaches the related muscle and then the signal is picked up by sensory neuron. and sends into motor neuron the interneuron connects the sensory and motor neurons. interneuron sends this into the motorneuron. the motor neuron sends the signal to the brain and spinal cord.

the picture in our textbook is attached above that may help you to understand easily.

hope this helped you.....

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