Wednesday August 19, 1998 - Question 5

Which of the following statements concerning nitric oxide (NO) are correct?

A) NO is a widely distributed endogenous vasodilator.
 
B) Circulating levels of NO are normally high.
 
C) NO is slowly degraded within the cardiovascular system once it is formed.
 
D) NO acts at sites great distances from the site of its release.
 
E) When patients take nitrates along with sildenafil, an increase in NO occurs, leading to vasoconstriction.
 

Discussion