Q1. Explain all key structures you pass by or through. You arrive at lung, explain what you see and narrate how body combats invading bacterium. Address both specific and nonspecific immunity and the cells that are involved in each process. Cross an alveolar membrane trace your route out of the body through the nose.

Q2. Roger has arthritis and has been taking prednisone (a glucocorticold) at prescribed levels for two months. He isn't feeling well and complains of repeated colds. He is puffy (edematous). Describe the reason for these symptoms.