Question

JoAnn has a cold. She is coughing up mucus (a respiratory secretion). JoAnn's lungs are the in the chain of transmission. The mucus from her cough is the in the chain of transmission.

Answer 1

JoAnn's has a cold , the lungs are beein affected by the cold. This is affect her to cough mucus which may be transmitable to other people to make them sick.

Answer 2

See below. I really can't find explanation.

Step-by-step explanation:

First blank (If this is correct on your test, thank me) is Portal entry.

Second blank is Portal Exit.