Question

Name the three parts of the pharynx; state whether each is an air passage only or an air and food passage. (p. 346)

Short answer

Answer: The oropharynx and laryngopharynx serve as both air and food passages.

Step-by-step solution

Identify the three parts of the pharynx

The pharynx is divided into three parts: nasopharynx, oropharynx, and laryngopharynx (also known as the hypopharynx).

Determine the function of the nasopharynx

The nasopharynx is an air passage only. It is located behind the nasal cavity and serves as a passageway for air from the nostrils to the throat.

Determine the function of the oropharynx

The oropharynx is both an air and food passage. It is located behind the oral cavity and serves as a passageway for both air from the nasal cavity and food and liquid from the mouth to the laryngopharynx.

Determine the function of the laryngopharynx

The laryngopharynx is also both an air and food passage. It is situated below the oropharynx and behind the larynx. It directs air to the lungs (through the trachea) and food to the esophagus. In summary, the three parts of the pharynx are the nasopharynx (air passage only), oropharynx (air and food passage), and laryngopharynx (air and food passage).