1. Identify diaphragm in this diagram.   B   C   D   E   Hint Half-n-half Clue   2. True or False: Trachea contains 16-20 'C'-shaped cartilaginous rings.   True   False   3. 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   4. True or False: Two-layered membrane which covers the lungs is known as pericardium.   True   False   5. True or False: Breathing through the mouth is considered as good as breathing through the nose.   True   False   6. Exchange of air occurs in _______ which are also known as 'air sacs'.   Alveolar ducts   Bronchi   Bronchioles   Alveoli   Half-n-half Clue   7. 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