Endocavity and intracavity both mean, "within a cavity."

The main function of the immune system is to:

a. fight infection b. produce lymph c. digest food d. control body processes

The “Web of Causation”

a. Emphasizes the multi-causal nature of disease b. Became part of mainstream epidemiology in the 1960s c. Was first introduced by Ronald Fisher d. a and b e. All of the above