Oral cavity leads into a short pharynx which serves as a common passage for

Options

A. Food only
B. Air only
C. Food and air
D. Digestive juices

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure**: The oral cavity is the beginning of the digestive system, where food enters. It is connected to a short passage known as the pharynx.

2. **Function of the Pharynx**: The pharynx serves as a common passageway for two important substances: food and air. This is crucial because both food and air travel through this area before they are directed to their respective pathways.

3. **Pathways After the Pharynx**: After the pharynx, the pathways diverge. The air continues down the trachea (the windpipe), while food is directed into the esophagus (the tube that carries food to the stomach).

4. **Role of the Epiglottis**: The epiglottis is a flap of tissue that covers the trachea during swallowing. This prevents food from entering the airway, ensuring that food goes down the esophagus instead.

5. **Conclusion**: Therefore, the pharynx serves as a common passage for both food and air before they are separated into their respective pathways.

**Final Answer**: The pharynx serves as a common passage for food and air.

---