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Question

Which one of the following actions is not a reflex action?

A
Salivation on seeing food
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B
Secretion of sweat
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C
Blinking of eyes due to bright light
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D
Flexion due to needle prick
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Solution

The correct option is B Secretion of sweat
The process of response to a peripheral nervous stimulation, that occurs involuntarily, i.e., without conscious effort or thought and requires the involvement of a part of the central nervous system is called a reflex action.

Sweating is not a reflex action. It is primarily a means of temperature regulation. But, salivation on seeing food, hand withdrawal because of the needle and blinking of the eyes due to bright light are all examples of reflex actions.

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