The primary action of Nitric oxide (NO) in the gastrointestinal tract is
In the gastrointestinal tract,NO impoant in the relaxation of smooth muscle NO act as inhibitory neurotransmitter in git. It doesnt have membrane bound receptor and diffuses into target cells and iactivates guanyl cyclase- produces cGMP from GTP- mediates smooty muscles relaxation.
Vasodilatation
Vasoconstriction
Gastrointestinal smooth muscle relaxation
Gastrointestinal slow smooth muscle contraction
Cardiovascular system