Histamine triggers vasodilation and leakiness in blood vessels during inflammation.Why would this be beneficial in fighting an infection by a pathogen?

Question

Quizplus · Accepted Answer

Histamine triggers both vasodilation and increased permeability of blood vessels, allowing for an increased number of white blood cells to migrate to the site of infection. This increase in the number and accessibility of white blood cells helps fight the infection by allowing for a stronger immune response. Option A and B are incorrect as they only describe the increase in the number of white blood cells or their migration, respectively. Option D is incorrect as increased accessibility of the pathogen to the blood is not beneficial in fighting an infection, whereas increasing white blood cells does aid in fighting off the infection.

Histamine Triggers Vasodilation and Leakiness in Blood Vessels During Inflammation