Pharynx: Cavity Of Pharynx Flashcards
Cavity of pharynx
- Nasopharynx
- Oropharynx
- Laryngopharynx
Nasopharynx site
Widest part
Behind nasal cavity
Nasopharynx function
Respiratory
Nasopharynx extension
From skull base to soft palate
Nasopharynx communications: anterior
With nasal cavity via posterior nasal opening
Nasopharynx communications: inferior
With Oropharynx via pharyngeal isthmus
Nasopharynx communications: lateral
With middle ear via auditory (eustachian) tube
Nasopharynx boundries
- Roof
- Floor
- Posterior wall
- Anterior wall
- Lateral wall
Nasopharynx roof
Sphenoid body and occipital body basilar part
Nasopharynx floor
Soft palate
Nasopharynx anterior wall
Nasal cavity and soft palate
Nasopharynx posterior wall
Atlas anterior arch
Nasopharynx lateral wall
- Auditory tube opening
- Tubal elevation
- Salpingopharyngeal fold
- Pharyngeal recess
- Nasopharyngeal tonsil
Auditory tube opening
1 cm behind inferior concha
Tubal elevation
Above and behind tube opening
Salpingopharyngeal fold
(Covers salpingo-pharyngeus muscle) descends from tubal elevation
Pharyngeal recess
Behind tubal elevation
Nasopharyngeal tonsil
- Lymphoid tissue mass at junction of roof and posterior wall
- Starts to degenerate at age 6-7 years
Oropharynx site
Behind oral cavity
Oropharynx function
Respiratory and digestive
Oropharynx extension
From soft palate to epiglottis upper border
Oropharynx communications anterior
With oral cavity via oropharyngeal isthmus
Oropharynx communications superior
With nasopharynx via pharyngeal isthmus
Oropharynx communications inferior
With laryngopharynx
Oropharynx boundries
- Anterior wall
- Posterior wall
- Lateral wall
Oropharynx anterior wall
Dorsum of pharyngeal part tongue
Oropharynx posterior wall
2nd and 3rd cervical vertebrae
Oropharynx lateral wall
- Palatine tonsil: Les in tonsillar fossa between palatoglossal and palatopharyngeal arches
Laryngopharynx
Opens in larynx cavity extending from epiglottis (above) to C6 lower border (below)
