NEET 2013
- Exam
- NEET
- Year
- 2013
- Subject
- Zoology
- Chapter
- Chemical Coordination and Integration
NEET 2013 · Zoology · Chemical Coordination and Integration
Norepinephrine: (i) is released by sympathetic fibers (ii) is...
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?
Options
- A(i) and (iii)
- B(ii) and (iii)
- C(ii) and (iv)
- D(i) and (iv)
Correct answer
A. (i) and (iii)
Step-by-step solution
Nor epinephrine is secreted by some neurons of the sympathetic nervous system and also by adrenal medulla. It accelerates heart rate, while epinephrine is secreted by parasympathetic nervous system and decrease blood pressure. (Ref. to Fig. 14.7)
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