Flashcards in 4.2 Pharynx Deck (59)
Where is the larynx, nasal cavity, and oral cavity located in relation to the pharynx?
Anterior to pharynx
The nasopharynx extends posterolaterally as the ...
What does the nasopharynx communicate with the oropharynx through?
pharyngeal isthmus (space between uvula and post. pharyngeal wall)
What does the nasopharynx communicate with the middle ear cavity through?
opening of auditory tube (pharyngotympanic tube)
Pharyngeal end of the cartilaginous part of auditory tube covered with mucus membrane
Mucus fold extended from torus tubarius; caused by underlining muscle of the same name
What are the 2 tonsils of the nasopharynx cavity?
pharyngeal and tubal tonsils (over torus tubarius)
What tonsil is called an adenoid when enlarged and where is it found?
pharyngeal tonsil; base of skull, pharyngeal recess
What is the oropharynx superior to?
upper margin of epiglottis
Through what does the oropharynx communicate with the oral cavity?
oropharyngeal isthmus between the two arches
What is the anterior pillar of the throat, and the larger arch, caused by underlining muscle of the same name?
Palatoglossal arch (fold)
What is the posterior pillar of the throat, and the smaller arch, caused by underlining muscle of the same name?
Where is the palatine tonsil?
half embedded in the tonsillar bed, between the 2 arches
What are the depressions (the line of mucosal reflection of the tongue onto the ant. epiglottis) on either side of the media glossoepiglottic fold called?
What are coanae, and what 2 anatomical areas do they separate?
posterior nasal apertures; between nasal cavity and nasopharynx
The laryngopharynx is posterior to the larynx, extending from the upper margin of the epiglottis to the ...
inferior border of cricoid cartilage, where it is continuous with esophagus
Through what opening does the laryngopharynx communicate with the larynx?
laryngeal adieus (inlet), formed by epiglottis and mucous folds
What are the depressions on either side of the larynx called, that correspond to the spot on the thyrohyoid membrane where internal laryngeal n. and superior laryngeal a. pierce it?
What tonsils make up Waldeyer's pharyngeal lymphoid ring?
Pharyngeal, Tubal, Palatine, and Lingual
Where is the lingual tonsil located?
posterior aspect of tongue
What anatomical landmark is slightly superior to the piriform recess on either side?
greater horn of hyoid bone
What are the 4 layers that make up the pharyngeal wall from superficial to deep?
1. Buccopharyngeal fascia
2. Pharyngeal mm.
3. Pharyngobasilar fascia
4. Pharyngeal mucosa
Which layer can be seen in isolation superiorly and inferiorly from the back of the pharynx?
What is the primary innervation for the constrictor and longitudinal muscles of the pharynx, except stylopharyngeus m.?
pharyngeal branches of CN X via pharyngeal plexus
Where does the superior constrictor m. arise from?
Primarily: pterygomandibular raphe (ligament)
Sup: lower 1/3 of posterior border of medial pterygoid plate
Inf: alveolar process of mandible
What does the superior constrictor m. attach to?
median raphe on the posterior pharyngeal wall
Which muscle is positioned in the plane continuous with the sup. constrictor m. and deviates laterally allowing the internal wall of the oral cavity to be continuous with the pharynx?
What innervates the buccinator m.?
Where does the middle constrictor m. arise from?
upper margin of greater horn and posterior margin of lesser horn of hyoid bone