pharynx Flashcards
to what vertebral level does the pharynx reach below
CVI
what are the 3 regions of the pharynx
- nasopharynx
- oropharynx
- laryngopharynx
what apertures open into the nasopharynx
choanae
what aperture opens into the oropharynx
oropharyngeal isthmus
what aperture opens into the laryngopharynx
laryngeal inlet
the pharyngotympanic tubes open into the lateral wall of the ….
nasopharynx
the pharynx is separated from the posteriolry positioned vertebral column by a thin … space containing loose connective tissue
retropharyngeal
the soft palate can elevate to close the …. …. and seal off the … from the …
pharyngeal isthmus, nasopharynx, oropharynx
the soft palate can depress to close the … … and seal off the …. … from the ….
oropharyngeal isthmus, oral cavity, oropharynx
which 2 types of muscles does the pharynx contain
- constrictor muscles (circular)
- longitudinal muscles (vertically)
what are the 3 constrictor muscles of the pharyngeal wall
- superior
- middle
- inferior
posteriorly, the constrictor muscles are joined together by the … …
pharyngeal raphe
all of the constrictors are innervated by the … branch of the …. nerve [?]
pharyngeal, vagus [X]
anterior attachment of superior constrictor
- pterygomandibular raphe
- adjacent bone on mandible and pterygoid hamulus
anterior attachment of middle contrictor
- upper margin of greater horn of hyoid bone
- adjacent margins of lesser horn
- stylohyoid ligament
anterior attachment of inferior constrictor
- cricoid cartilage
- oblique line of thyroid cartilage
- a ligament that spans between these attachments and crosses the cricothyroid muscle
what are the three longitudinal muscles of the pharyngeal wall
- stylopharyngeus
- salpingopharyngeus
- palatopharyngeus
origin of stylopharyngeus
medial side of base of styloid process
origin of salpingopharyngeus
inferior aspect of pharyngeal end of paryngotympanic tube
palatopharyngeus
upper surface of palatine aponeurosis
insertion of all longitudinal muscles
pharyngeal wall
innervation of stylopharyngeus
glossopharyngeal nerve [IX]
innervation of salpingopharyngeus
vagus nerve [X]
innervation of palatopharyngeus
vagus nerve [X]
what function, other than the elevation of the pharynx, does the palatopharyngeus have
closer of the oropharyngeal isthmus
