1. Identify bronchus in this diagram.   A   B   C   D   Hint Half-n-half Clue   2. Normal rate of respiration in an adult human being is _______ times/ minute. A. 10-12 B. 12-14 C. 16-18 D. 22-24   A   B   C   D   Half-n-half Clue   3. True or False: Breathing through the mouth is considered as good as breathing through the nose.   True   False   4. True or False: Exhalation and inhalation of air is known as "cellular respiration".   True   False   5. What is the leaf-like structure which prevents the entry of food into respiratory passages?   Pharynx   Epiglottis   Tongue   Larynx   Half-n-half Clue   6. Spirometer measures: A. Capacity of lungs B. Volume of air inhaled and exhaled C. Residual air D. All of these   A   B   C   D   Half-n-half Clue   7. Which part of the respiratory tract is also known as the voice box?   Epiglottis   Pharynx   Trachea   Larynx   Half-n-half Clue