A man presents to an ER with a large laceration sustained at a construction site 3 days before. The area around the laceration is erythematous, painful, and swollen. The erythema and swelling can be explained at a cellular level by all the following EXCEPTGroup of answer choicesmast cell degranulation and release of histamine. pro-inflammatory prostaglandins released. increased vasomotor tone (vasoconstriction) of the capillaries in the area. local reaction to acute phase reactants.