Laryngopharynx

Definition

The laryngopharynx is the lower part of the pharynx, located behind the larynx and extending to the esophagus. It serves as a pathway for both air and food.

5 Must Know Facts For Your Next Test

1. The laryngopharynx plays a dual role in respiration and digestion, directing air to the larynx and food to the esophagus.
2. It is lined with mucous membranes that help trap pathogens and particles, contributing to immune defense.
3. Normal microbiota in the laryngopharynx include various bacteria that can outcompete potential pathogens.
4. Infections such as pharyngitis can affect the laryngopharynx, causing symptoms like sore throat and difficulty swallowing.
5. The laryngopharynx connects seamlessly with both the oropharynx above it and the esophagus below it.

Review Questions

• What are the primary functions of the laryngopharynx?
• How does the normal microbiota in the laryngopharynx contribute to immune defense?
• Which part of the respiratory system does pharyngitis affect?

Related terms

Pharynx:

A tube that connects the nasal cavity and mouth to the esophagus; divided into nasopharynx, oropharynx, and laryngopharynx.

Larynx:

Also known as the voice box, it is located just below the pharyngeal opening and above the trachea.

Esophagus:

A muscular tube that transports food from the pharynx to the stomach.