Chapter 4

Question 1

Primary functions of respiratory system.

Answer 1

1) Delivers oxygen to body and expels carbon dioxide; 2) produces sound; 3) provides olfactory paths

Question 2

alveoli

Answer 2

membrane structures at the ends of bronchioles which allow transport of oxygen and carbon dioxide to and from the blood stream

Question 3

functions of sinuses

Answer 3

warming and moisturizing air before it enters lungs, to protect alveoli