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?

Question

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)

Tardigrade Admin · Accepted Answer

Norepinephrine is secreted by some neurons of the sympathetic nervous system and also by adrenal medulla. It accelerates heart rate.

Q. 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?

(i) and (iii)

(ii) and (iii)

(ii) and (iv)

(i) and (iv)

Norepinephrine is secreted by some neurons of the sympathetic nervous system and also by adrenal medulla. It accelerates heart rate.

Q. 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?