A sixth grade science teacher asks the students to explain the role of cilia in the lower respiratory tract. which student response is the best?
a. cilia help to warm the airways so that moisture in the air can neutralize any germs that get in our lungs.
b. cilia help facilitate a chemical defense against germs by secreting an enzyme that will cement the germ to the lining of the airways.
c. these little hairs move germs trapped in mucous toward the throat so the body can cough them out.
d. cilia can trap the microbes in one location so the body can grow scar tissue around them and wall them off so they can't cause disease.