NEET · Biology · STD 11 - 19. Chemical coordination and integration
Norepinephrine \((i)\) is released by sympathetic fibers \((ii)\) is released by parasympathetic fibers \((iii)\) increases the heart rate \((iv)\) decreases blood pressure. Which of the above statements are correct ?
- A \((i)\) and \((iii)\)
- B \((ii)\) and \((iii)\)
- C \((ii)\) and \((iv)\)
- D \((i)\) and \((iv)\)
Answer & Solution
Correct Answer
(A) \((i)\) and \((iii)\)
Step-by-step Solution
Detailed explanation
(a) : Norepinephrine is secreted by some neurons of the sympathetic nervous system and also by adrenal medulla. It accelerates heart rate.
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