Question

One of the inflammatory reaction induced by histamine is

• A. Vasoconstriction of blood vessels
• B. Vasodilation of peripheral blood vessels
• C. Decreased vascular permeability
• D. Accelerated blood clotting

Answer 1

The correct option is B Vasodilation of peripheral blood vessels

Histamine is an organic nitrogenous compound involved in the inflammatory response and has a central role as a mediator of itching. Histamine causes vasodilation of peripheral blood vessels due to which there is increased blood flow to the site of inflammation. It mediates the inflammatory reaction by the release of other chemical mediators of inflammation and causes redness, swelling etc at the site of inflammation.

So, the correct answer is 'Vasodilation of peripheral blood vessels'.