PATHOLOGY MCQ
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What would your body’s response be to having the flame of a candle getting too close to your hand?
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To sweat
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To yell
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To pull your hand away
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None of the above
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Explanation:
Detailed explanation-1: -If you touch something that is very hot, your hand moves away quickly before you even feel the pain. You don’t have to think about it because the response is a reflex that does not involve the brain. A reflex is a rapid, unlearned, involuntary (automatic) response to a stimulus (change in the environment).
Detailed explanation-2: -Receptor cells in the skin detect a stimulus (the heat from the candle). Sensory neurone sends impulses to relay neurone in the spinal cord. The relay neurone connects to the motor neurone (and also sends a message to the brain). Motor neurone sends impulses to effector.
There is 1 question to complete.