1. Voice box is the name given to the   larynx   trachea   pharynx   oral cavity   Hint Half-n-half Clue   2. 'C' shaped rings of cartilage are present in the   Trachea   Esophagus   Ureter   Intestines   Half-n-half Clue   3. Which of the following helps keep the human body cool? A. Respiration B. Mastication C. Perspiration D. Urination   A   B   C    D   Half-n-half Clue   4. True or false: Exchange of air takes place in the lungs.   True   False   5. Epiglottis guards the opening of larynx into pharynx.   True   False   6. Incisors are used for _______ the food.   cutting   chewing   tearing   grinding   Half-n-half Clue   7. _______ are formed by the division of trachea.   Bronchi   Bronchioles   Air sacs   Ureters   Half-n-half Clue