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Question

The sympathetic nervous system causes

A
Constriction of the pupil
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B
Decreased heart rate
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C
Increased gastric secretion
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D
Reduction of adrenaline secretion
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E
Increased respiration
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Solution

The correct option is E Increased respiration
  • Whenever the sympathetic system is activated, the metabolism of our body increases.
  • This increases CO2 levels and reduces the pH of the blood. This acts as a stimulus for the respiratory centre and the respiratory rate increases. The sympathetic system is usually activated at the time of exercise. Hence, The sympathetic nervous system causes Increased respiration.
  • So, the correct answer is 'Increased respiration'.


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