Inlets or manholes must be placed at each point where the ____________________ or size of the pipe changes.

A less than optimal lateral knee projection that demonstrates the medial femoral condyle anterior to the lateral femoral condyle will also demonstrate

a. the fibula superimposed by the tibia. b. the abductor tubercle on the anterior femoral condyle. c. an open patellofemoral joint. d. an unobscured suprapetallar fat pad.

Major proteins in serum that attack pathogens and can also attract macrophages to pathogens and stimulate inflammation are called _______________. 

Fill in the blank(s) with the appropriate word(s).