pharynx and larnyx Flashcards
(30 cards)
what is the pharynx the beginning of
the respiratory and digestive tracts
extension of pharynx
pharyngeal tubercle of the occipital bone to C6
what is the pharynx continuous with
esophagus
function of pharyngeal constrictor muscles
decrease lumen of pharynx and propel bolus of food from oral cavity to esophagus
midline insertion of pharyngeal constrictor muscles
pharyngeal raphe
where do the second group of the three pharyngeal muscles insert and how are they orientated
insert on the thyroid cartilage and are orientated longitudinally
where is the nasopharynx
behind the nose and above soft palate
anterior extent of the nasopharynx
paired choanae
superior aspect of the nasopharynx
adenoids
prominent feature of lateral wall of the nasopharnx
auditory tube
location of oropharynx
under soft palate and anterior to epiglottis
what encloses the palatine tonsils
palatoglossal and palatopharyngeal folds
location of laryngeal pharynx
posterior to the laryngeal cartilages
- extends from the upper border of the epiglottis to lower border of cricoid cartilage
lateral wall of laryngeal pharynx
thyrohyoid membrane and thyroid cartilage medical to which are the piriform recesses
significance of prirform recess
abrasion of lining can result to injury to branches of internal/inferior laryngeal nerves
vessels that traverse tonsillar bed
tonsillar branches of ascending pharyngeal and facial arteries and large external palatine vein
where can the glossopharyngeal nerve be found
lateral wall of the phayrnx
what does the soft palate separte
nasopharynx from the oropharynx
what is the uvula made up of
5 muscles that insert centrally into the palatine aponeursis
muscles of the uvula
palatoglossal palatopharyngeus levator palati tensor palati musculus uvulae
first stage of swallowing
food molded into bolus and propelled toward oropharynx by tongue
- supra hyoid elevates hyoid to stabilize layrnx
second stage of swallowing
soft palate tensed and elevated closing off nasophayrnx
- larynx and pharnyx elevated, shortened and widening the passeway for the food
- epiglottis pulled back over larynx
- pharyngeal constrictor push food down
third stage of swallowing
inferior pharyngeal constrictor muscles relax allowing food to enter the esophagus
-infra-hyoid depress larynx and stabilize hyoid bone
what does the glossopharyngeal nerve innervate
supplies motor fibers to stylopharyngeous muscle
-sensory fobers from posterior 1/3 tongue
