1. Identify diaphragm in this diagram.   B   C   D   E   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. Identify bronchus in this diagram.   A   B   C   D   Half-n-half Clue   4. What is the leaf-like structure which prevents the entry of food into respiratory passages?   Tongue   Epiglottis   Larynx   Pharynx   Half-n-half Clue   5. Exchange of air occurs in _______ which are also known as 'air sacs'.   Alveoli   Bronchioles   Alveolar ducts   Bronchi   Half-n-half Clue   6. Which process does not occur in the nasal cavity? A. Trapping of large foreign bodies B. Exchange of gases C. Humidification of inhaled air D. Warming of inhaled air   A   B   C   D   Half-n-half Clue   7. Write the correct sequence of the pathway through which air travels after entering the body. A. Larynx, pharynx, trachea bronchioles B. Pharynx, larynx, trachea, bronchioles C. Pharynx, larynx, bronchioles, trachea D. Pharynx, trachea, larynx, bronchioles   A   B   C   D   Half-n-half Clue