Pharynx Flashcards
what is the circular layer of pharyngeal muscles composed of
3 bilaterally paired constrictor, skeletal muscles
where do the pharyngeal constrictors insert
onto its contralateral pair to form a midline raphe
where does the superior constrictor muscle attach to
the pterygoid plate and mandible
where does the middle constrictor attach to
via the raphe to the greater and lesser horns of the hyoid
where does the inferior constrictor attach to
the thyroid and cricoid cartilages
what is the inner longitudinal layer of pharyngeal muscles composed of
3 paired vertical, skeletal muscles
what are the 3 inner longitudinal pharyngeal muscles
stylopharyngeus, salpingopharyngeus and palatopharyngeus
what do the inner longitudinal pharyngeal muscles do
elevate the larynx and shorten the pharynx
where do the inner longitudinal pharyngeal muscles insert
onto the posterior border of the thyroid cartilage
innervations of the inner longitudinal pharyngeal muscles
CN X, except stylopharyngeus - CN IX
where does the pharyngeal space allow communication between
lower neck and base of skull, structures leave medially
where might infection of the retropharyngeal space spread
mediastinum
where does the sympathetic trunk run in relation to the pharyngeal constrictor muscles
lateral edge
what major vessel and nerve run lateral to the sympathetic trunk
carotid and vagus
what ganglion is in the sympathetic trunk
superior cervical
branches of what 2 CNs make up the pharyngeal plexus
CN IX and X
what does the pharyngeal plexus innervate
muscles of the soft palate and pharynx (excluding tensor levi palatini)
sensory component of the mucosa
what forms the superior pharyngeal space
the superior constrictor and superior bone
what passes through the superior pharyngeal space
eustachian tube tensor levi palatini
where is the gateway to the mouth
between the superior and middle constrictor muscles
what passes through the gateway to the mouth
CN IX, lingual artery and stylopharyngeus (nerve piggy backs on muscle)
what sits just anterior to the gateway to the mouth
tonsil
where does the recurrent laryngeal nerve pass between
inferior constrictor and cricopharyngeus
