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The pharynx connects what?

the nasal cavity and mouth superiorly to the larynx and esophagus inferiorly

What is the pharynx commonly called?

the throat

The pharynx extends to where?

about 5 inches from the base of the skull, to the level of the 6th cervical vertabra

What are the three regions the pharynx is divided into?

the nasopharynx, oropharynx, laryngopharynx

The muscular pharynx wall is composed of what?

skeletal muscle

why does the nasopharynx serve only as an air passageway?

Because it lies above the point where food enters the body

what closes off the nasopharynx and prevents food from entering the nasal cavity?

The soft palate and its pendulous uvula move superiorly

the nasopharynx is continuous with what?

the nasal cavity through the posterior nasal apertures

What is another name for pharyngeal tonsil?


What is the job of the pharyngeal tonsil(adenoid)?

trap and destroy pathogens entering the nasopharynx in air

Infected and swollen adenoids block air passage in the nasopharynx and make it necessary to do what?

breathe through the mouth.

when the adenoids are chronically enlarged what may be disturbed?

speech and sleep

What do the pharyngotympanic (auditory)tubes do?

drain the middle ear cavities and allow middle ear pressure to equalize with atmospheric pressure

A ridge of pharyngeal mucosa also referred to as what?

tubal tonsil

Because of the strategic location of the tubal tonsils what do they help protect?

the middle ear against infections likely to spread from the nasopharynx.

What also plays a protective role of the middle ear?

pharyngeal tonsil, superoposterior and medial to the tubal tonsils

The oropharynx is continuous with the oral cavity through what?

an archway called isthmus of the fauces

What passes through the oropharynx?

Food and air

What kind of tissue does the oropharynx have?

stratified squamous epithelium

The structural accommodation of the tissue change of the oropharynx helps with what?

increased friction and greater chemical trauma accompanying food passage

What are the two kinds of tonsils embedded in the oropharyngeal mucosa?

palatine tonsils and lingual tonsils

The laryngopharynx serves as a passage way for what?

food and air

What type of tissue does laryngopharynx have?

stratified squamous epithelium

During swallowing what has the right of way?

food, air passage temporarily stops

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