The most important functions of the complement system are to alter microbial cell membranes and a. initiate an inflammatory response. b. release digestive enzymes into a phagosome. c. reduce phagocytosis. d. inactivate macrophages.

The most important functions of the complement system are to alter microbial cell membranes and A. initiate an inflammatory response. The complement system is a part of the innate immune system, that is, the system is not adaptable and does not make alterations to the involved proteins over the life time of an individual. The complement system however enhances the functioning of the adaptive immune system by producing cytokines that overwhelm its response.