What are the functions performed by histamine in the body?
Histamine is a potent vasodilator. It performs various functions in the body (i) it contracts muscles in the gut and bronchi (i) lt relaxes some other muscles, e.g.. in the walls of blood vessels. (iii) It is responsible for congestion in the nose associated with common cold and allergies. (iv) It stimulates the release of pepsin and HCI in the stomach.