Pharynx

Definition

The pharynx is a muscular tube that connects the nasal and oral cavities to the larynx and esophagus. It plays a crucial role in both the respiratory and digestive systems by allowing the passage of air and food.

5 Must Know Facts For Your Next Test

1. The pharynx is divided into three regions: nasopharynx, oropharynx, and laryngopharynx.
2. It acts as a pathway for air to move from the nasal cavity to the larynx.
3. The pharynx is involved in swallowing, facilitating the movement of food from the mouth to the esophagus.
4. It plays a role in vocalization by providing resonance for sound production.
5. The epiglottis, located at the entrance of the larynx, helps direct food into the esophagus and prevents it from entering the trachea.

Review Questions

• What are the three regions of the pharynx?
• How does the pharynx contribute to both respiration and digestion?
• What is the function of the epiglottis in relation to the pharynx?

Related terms

Larynx:

The larynx, or voice box, is an organ located just below the pharynx that houses the vocal cords and is responsible for voice production.

Esophagus:

The esophagus is a muscular tube that connects the throat (pharynx) with the stomach, facilitating food passage during swallowing.

Epiglottis:

The epiglottis is a flap-like structure made of elastic cartilage located at the entrance of the larynx that prevents food from entering the trachea during swallowing.