The correct answer is:
Option 2: Epiglottis
The epiglottis is a flap of cartilage located at the base of the tongue that covers the opening of the windpipe (trachea) during swallowing. Its role is to prevent food and liquids from entering the trachea and the lungs. When the epiglottis does not function properly (e.g., it fails to close the trachea correctly during swallowing), food or liquid may accidentally enter the airway, causing a person to cough.
If food or liquid enters the trachea (windpipe) instead of the esophagus, it triggers the body's cough reflex to clear the airway, leading to coughing.
Thus, improper movement of the epiglottis would cause coughing during swallowing.
List I | List II | ||
A. | Oxidative decarboxylation | I. | Citrate synthase |
B. | Glycolysis | II. | Pyruvate dehydrogenase |
C. | Oxidative phosphorylation | III. | Electron transport system |
D. | Tricarboxylic acid cycle | IV. | EMP pathway |