What happens when the vasodilator histamine is released by the mast cells?
A. The inflammatory process is ended.
B. Blood platelets adhere to collagen fragments and begin the healing process.
C. Blood vessels expand and become more permeable.
D. Blood vessels constrict and become less permeable.
Question 2
Injury and infection by a pathogenic organism can cause inflammation. What else can cause an inflammatory response?
A. Administration of corticosteroid hormones
B. Excess lysosomes in the cells
C. Interaction of antibodies and antigens
D. No other causes exist
