Anatomical Relations of Pharynx Flashcards
Where does the Pharynx begin?
Base of skull
Function of Pharnyx
Connects the oral and nasal cavities to the oseophagus and larynx
Where does the Pharynx end?
Inferior border of cricoid cartilage
Vertebral level of cricoid cartilage
C6
Name the 3 parts that the pharynx is divided into
Nasopharynx
Oropharynx
Laryngopharynx
Which structure separates the nasopharynx from the oropharnynx?
Soft palate
What are choanae?
Paired openings of the nasal cavity into the nasopharynx
Where does the nasopharynx begin?
Base of skull
Give the 2 respiratory functions of the nasopharynx
- Conditions inspired air
2. Propagates air into the larynx
Describe the respiratory epithelium of the nasopharynx
Ciliated pseudostratified columnar epithelium with goblet cells
A more common term for pharyngeal tonsils
Adenoids
Function of eustachian tube (aka pharyngotympanic tube or auditory tube)
Connects the middle ear to the nasopharynx
Opens the pharyngeal orifice of Eustachian tube during swallowing
Salpingopharyngeal muscle
Which structure separates the oropharynx from the laryngeopharynx?
Inferior border of cricoid cartilage and oseophagus
Function of oropharynx
Voluntary and involuntary stages of swallowing
4 contents of oropharynx
- Posterior 1/3 tongue
- Lingual tonsil
- Palatine tonsil
- Superior constrictor muscle
Lymphoid tissue at the base of the tongue
Lingual tonsil
Lymphoid tissue in tonsillar sinus
Palatine tonsil
Space between the two pharyngeal arches
Tonsillar sinus
Which is more anterior: palatoglossal arch or palatopharyngeal arch?
Palatoglossal arch is anterior
Palatopharyngeal arch is posterior
Posterior boundary of oropharynx
C2-C3
Posterior boundary of laryngopharynx
C4-C6
How does the laryngopharynx communicate with the larynx?
Laryngeal inlet
What separates the piriform fossa from the laryngeal inlet?
Ary-eiglottice fold
