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Terms in this set (29)
part of the digestive and respiratory system located posterior to the nasal cavity, oral cavity and larynx
the pharynx is about 12 centimeters in length and extends from the ______ inferiorly to the ____ below, which lies at CV6; here it becomes continuous with the esophagus.
base of the skull inferiorly
to the cricoid cartilage below
the widest part of the pharynx is ____, and its narrowest point is at its termination at the ____; thus its funnel shaped.
widest: below the skull
narrowest: termination at the esophagus
the pharynx has openings that allow it to be continuous with 7 cavities:
2 nasal cavities
2 tympanic cavities
the pharynx is divided into three parts:
nasopharynx- posterior to the nasal cavity
oropharynx- posterior to the oral cavity
laryngopharynx- posterior to the larynx
the nasopharynx is open to the nasal cavity at the _____, a bony aperture located at the junction of the nasal cavity and nasopharynx
the roof and posterior wall of the nasopharynx form a continuous sloping surface that lies under the ______
body of the sphenoid and basilar part of the occipital bone
a mass of lymphoid tissue is embedded in the mucous membrane here and is termed the _____; also referred to as ____, which when they enlarge can cause respiratory obstruction
the lateral wall of the nasopharynx is characterized by the _______, which is 1.5 cm posterior to the inferior nasal conchae.
pharyngeal opening of the auditory tube
the _______ (3 names) is 3.5 cm long and connects the tympanic cavity of the middle ear with the nasopharynx.
auditory tube/eustachian tube/ pharyngotympanic tube
It's anterior-medial 2/3, part related to the pharynx, is composed of ______. It's posterior-lateral 1/3, part related to the middle ear, is composed of _____.
the cartilaginous part of the pharyngotympanic tube, because of its elastic tissue usually remains collapsed . It opens during:
swallowing, yawning, and when pressure differences exist between that of the tympanic cavity and the atmospheric pressure.
the medial end of the cartilaginous part of the pharyngotympanic tube projects into the nasopharynx on the lateral wall just superior to the opening of the auditory tube. This structure is known as _____.
the 3 mucous membrane folds that extend from the torus tubarius are:
Each of these folds of mucous membrane exists because of the presence of a muscle housed by the fold.
extends from the torus to the soft palate
extends from the torus to the lateral wall of the pharynx
between the other two folds, extends from the mouth of the tube to the soft palate
the portion of the nasopharynx posterior to the torus is termed the _____. Lymphoid tissue is sometimes found here.
the nasopharynx communicates with the oropharynx via the _____, bounded by the soft palate anteriorly and the wall of the pharynx posteriorly.
the part of the pharynx posterior to the oral cavity
the oropharynx is continuous with the oral cavity by the oropharyngeal isthmus with the following boundaries:
superiorly- soft palate
laterally- the pillars of the fauces
a fold of the mucous membrane extending from the soft palate to the side of the tongue is known as_________. It contains the_______.
anterior pillar of the fauces (palatoglossal arch)
the ___________ extends from the soft palate to the lateral side of the pharynx. It contains the ______________
posterior pillar of the fauces (palatopharyngeal arch)
Between the two arches lies the tonsillar bed, in which the __________ lies; a collection of lymphoid tissue under the mucous membrane of the oropharynx.
the _______/_______ extends from the upper border of the epiglottis to the cricoid cartilage, where it becomes continuous with the esophagus. It lies posterior to the larynx.
On either side of the larynx lies a _________. During swallowing, a bolus of food is usually deviated laterally by the epiglottis into one or both food channels.
What courses under the mucous membrane in each piriform recess?
the internal laryngeal nerve/ the superior laryngeal artery
the wall of the pharynx consists of 4 layers known as:
1. mucous membrane
2. fibrous layer
3. muscular layer
4. fascial layer
Which of the 4 layers lines the internal surface of the pharynx, nasal cavity, oral cavity, and larynx, and is also found in the auditory tube?
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