1. Larger dust particles in the inhaled air are trapped in the   nose   pharynx   epiglottis   larynx   Hint Half-n-half Clue   2. Gastric juice is secreted by   stomach   liver   small intestine   pancreas   Half-n-half Clue   3. True or false: Exchange of air takes place in the lungs.   True   False   4. Which of the following is not true? A. Heart rate in a healthy human adult is 60-64 beats per minute. B. Oxygen is transported to various parts of the body through blood. C. White blood cells help the body fight against infections. D. Platelets play an important role in clotting of blood.   A   C   B   D   Half-n-half Clue   5. True or false: CO2 is formed as a waste product during respiration.   True   False   6. Epiglottis guards the opening of larynx into pharynx.   True   False   7. 'C' shaped rings of cartilage are present in the   Trachea   Esophagus   Ureter   Intestines   Half-n-half Clue   Skip to Diagrammatic repr... ⇒