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Why do we hiccup and cough sometimes when we swallow food?
 
a. A pipe is responsible for transporting air from the nostrils to the lungs .
 
b. The pipe transports food from the mouth to the stomach is .
c. A flap-like structure that prevents the entry of food into the windpipe is .
 
d. When we swallow, the Epiglottis .
 
e. The flap-like structure called the Epiglottis has .
 
f. Hiccups can occur .