pharynx
connects nasal cavity to oral cavity and esophagus or trachea
The pharynx is a muscular tube-like structure located in the neck region behind the mouth and nasal cavity. It is a part of both the respiratory and digestive system and has three regions: nasopharynx, oropharynx, and laryngopharynx.
The nasopharynx is located behind the nasal cavity and serves as a passage for air to enter and exit the nasal cavity during breathing. It also houses the adenoids, which help in the defense against infection.
The oropharynx is located behind the oral cavity and serves as a passageway for air and food. It contains the tonsils, which play a role in the body’s immune system.
The laryngopharynx is the lower part of the pharynx, which connects to the esophagus and trachea. It serves as a passageway for food and air and plays a critical role in the process of swallowing.
Overall, the pharynx serves as a vital pathway between the nasal cavity, oral cavity, esophagus, and larynx, allowing for respiration and digestion to occur.
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