The structure which prevents the entry of food particles into the respiratory passage is:
Correct answer: B. Epiglottis
- A. Hard palate
- B. Epiglottis
- C. Soft palate
- D. Larynx
Explanation
The epiglottis is a flap of tissue that covers the trachea during swallowing, preventing food from entering the respiratory passage. The food travels down the esophagus and into the stomach, while the air passes through the trachea and into the lungs.
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The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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