1. Nasopharynx: This is the uppermost part of the pharynx, located behind the nasal cavity. It connects the nasal cavity to the rest of the pharynx.
2. Oropharynx: This is the middle part of the pharynx, located behind the oral cavity. It connects the oral cavity to the rest of the pharynx.
3. Laryngopharynx: This is the lower part of the pharynx, located behind the larynx. It connects the larynx to the esophagus.
4. Eustachian tube openings: These are small openings located in the nasopharynx, connecting it to the middle ear. They help equalize pressure between the middle ear and the atmosphere.
5. Palatine tonsil crypts: These are small openings located in the oropharynx, within the tonsils. They allow for the drainage of fluids and particles from the tonsils.
6. Lingual tonsil crypts: These are small openings located in the oropharynx, within the lingual tonsils. They also allow for the drainage of fluids and particles from the tonsils.
7. Opening of the larynx: This is the opening located in the laryngopharynx, leading to the larynx. It allows for the passage of air during breathing and sound production.