00:01
Given are the following options where we have to find out which is not an example of reflex action.
00:26
We know that a reflex action is involuntary in nature.
00:40
This is controlled by peripheral nervous system and in not conscious control of brain.
01:10
Here we see there are five options.
01:13
The first option is.
01:16
Salivating at the site of food.
01:20
Salivating at the site of food is an involuntary action also there is no conscious control of the brain.
01:28
Therefore this option is not correct.
01:35
For the second option, it is withdrawal of hand upon touching a hot object.
01:49
This action is also a form of reflex action.
01:53
It is very quick and involuntary.
01:55
It also does not take any conscious control or signal from brain because whenever we need some conscious control we need some planned decisions from our brain and it is slower than the reflex action if our action is slower we may end up burning our hand therefore this is also an example of reflex action the next option is jerking the knee when the tendon below the knee is tapped.
02:38
This is also a reflex action because this is involuntary action and controlled by peripheral nervous system.
02:50
The next option is closing of eyelids when an insect comes towards the eyes...