1. 'C' shaped rings of cartilage are present in the   Trachea   Esophagus   Ureter   Intestines   Hint Half-n-half Clue   2. What is the name of the sac-like structure which stores urine?   Urinary Bladder   Ureter   Kidney   Stomach   Half-n-half Clue   3. True or false: Exchange of air takes place in the lungs.   True   False   4. Larger dust particles in the inhaled air are trapped in the   nose   pharynx   epiglottis   larynx   Half-n-half Clue   5. True or false: CO2 is formed as a waste product during respiration.   True   False   6. _______ are formed by the division of trachea.   Bronchi   Bronchioles   Air sacs   Ureters   Half-n-half Clue   7. Epiglottis guards the opening of larynx into pharynx.   True   False   Skip to Diagrammatic repr... ⇒