pharynx Flashcards
between pharynx and vertebral column posteriorly
retropharyngeal space
between nasopharynx and oropharynx
pharyngeal isthmus
3 subdivisions of pharynx
- nasopharynx
- oropharynx
- laryngopharynx
nasopharynx is superior to
soft palate (and pharyngeal isthmus)
opening in front of nasopharynx
choanae
opening in front of oropharynx
oropharyngeal isthmus
opening in front of laryngopharynx
laryngeal inlet
what two bones are on the roof and posterior wall of nasopharynx
sphenoid and occipital
whats between the nasopharynx and oropharynx
pharyngeal isthmus
elevation posterior to the PT tube
torus tubarius
posterior to torus tubarius
pharyngeal recess
vertical fold of membrane covering a muscle that runs below the torus tubarius
salpingopharyngeal fold
oropharynx is between
soft palate and base of tongue
boundaries between oral cavity and oropharynx
palatoglossal arches and oropharyngeal isthmus
laryngopharynx is between
epiglottis to top of esophagus
collection of lymphoid tissues in the mucosa of pharynx surrounding openings of nasal and oral cavities
tonsils
what are pharyngeal tonsils known as when enlarged
adenoids
location of pharyngeal tonsil
midline on roof of nasopharynx
location of palatine tonsil
each side of oropharynx, between palatoglossal and palatopharyngeal arches
location of lingual tonsils
posterior 1/3 of tongue
two side of pharyngeal wall join posteriorly to form what
pharyngeal raphe
superior attachment of pharyngeal raphe
pharyngeal tubercle (of occipital bone)
inferior attachment of pharyngeal raphe
posterior wall of esophagus ( at vertebra C6)
attachment of pterygomandibular raphe
from pterygoid hamulus to retromolar fossa on mandible
function of pterygomandibular raphe
join buccinator and superior constrictor mm
constrictor muscles have __ direction
circular
longitudinal muscles have ___ direction
vertical
constrictor muscles have fascial linings. what are the types
internal - pharyngobasilar
external - buccopharyngeal
constrictor mm are joined posteriorly to
pharyngeal raphe
function of constrictor mm
constrict or narrow pharyngeal cavity
what innervates constrictor mm
vagus n via pharyngeal plexus
what passes through the gap between skull and superior constrictor m
- PT tube
- levator veli palatini m
- ascending pharyngeal a
- ascending palatine a
what passes through the gap between superior and middle constrictor mm and posterior border of mylohyoid m
- stylopharyngeus m
- hyoglossus m
- glossopharyngeal n
- hypoglossal n
- lingual a and v
- ascending palatine a
- stylohyoid ligament
what passes through the gap between middle and inferior constrictor mm
- internal laryngeal n
- superior laryngeal a
what passes below the inferior constrictor m to reach the larynx
- recurrent laryngeal n
- inferior laryngeal a
what branches of ECA supply the upper part of the pharyngeal wall
- ascending pharyngeal a
- facial a (ascending palatine a, tonsillar a)
- maxillary a (pharyngeal a, a of the pterygoid canal)
- lingual a
what is the blood supply to the lower part of the pharyngeal wall
pharyngeal branches from inferior thyroid a (from subclavian a)
what makes up the pharyngeal plexus
- vagus n (pharyngeal branch, superior laryngeal n, external laryngeal n)
- glossopharyngeal n (pharyngeal branch)
sensory innervation to nasopharynx
pharyngeal branch of max n
sensory innervation to oropharynx
glossopharyngeal n
sensory innervation to laryngopharynx
vagus n
Function of salpingopharyngeal m
Open the orifice of the pt tube
Boundary between oral cavity and oropharngeal isthmus
Palatoglossal arches
Limits to the c shaped line of pharyngeal wall
- nasal cavities
- posterior part of medial pterygiod plate
- pt tube
- Petrous part of temporal bone
- pharyngeal tubercle of occipital bone
What is posterior to pharyngeal raphe
Retropharyngeal space
Two muscles that attach the oblique line of thyroid cartilage
Thyrohyoid m
Inferior constrictor m
what two muscles are innervated by the external laryngeal n (CN 10)
- cricothyroid m
- inferior constrictor m
