Pharyngeal Muscles Flashcards
what phayngeal constrictor forms the side and back of the nasopharynx and part of the back of the oropharynx?
superior pharyngeal constrictor m.
best for viewing soft tissue - bone is opaque
ultrasound imagin
cannot see movement of articulators with this instrumentation
functional magnetic resonance imaging (best for brain)
the pharyngeal constrictor muscles make up the ______ and _______ walls of the pharynx
posterior and lateral
this portion of the inferior pharyngeal constrictor m. is also known as the upper esophageal sphincter (UES)
cricopharyngeal muscle/cricopharyngeus
what is the origin and insertion of the stylopharyngeus?
origin: styloid process
insertion: pharyngeal constrictors and posterior thyroid cartilage
this portion of the inferior pharyngeal constrictor m. reduces the diameter of the lower pharynx
thyropharyngeus
the inferior pharyngeal constrictor m. portions are innervated by what?
Vagus nerve (X), however the circopharyngeal is also innervated by RLN
what is the origin and insertion of the superior pharyngeal constrictor?
origin: ptyergomandibular raphe
insertion: median pharyngeal raphe (of the pharyngeal aponeurosis)
what is the innervation of the superior pharyngeal constrictor?
CN IX (glossopharyngeal) and X (vagus) via the pharyngeal plexus
what is the function of the salpingopharyngeus?
elevates the lateral pharyngeal wall
what is the innervation of the salpingopharyngeus?
CN X and XI (spinal accessory) via pharyngeal plexus
what is the origin and insertion of the sapingopharyngeus?
origin: lower margin of auditory tube
insertion: palatopharyngeus muscle
this portion of the inferior pharyngeal constrictor m. relaxes during swallowing
cricopharyngeal muscle
what are the two portions of the inferior pharyngeal constrictor m.?
thyropharyngeus and cricopharyngeal muscle
what is the origin and insertion of the middle pharyngeal constrictor m.?
origin: horns of hyoid bone & stylohoid ligament
insertion: median pharyngeal raphe (of the pharyngeal aponeurosis)
this portion of the inferior pharyngeal constrictor m. arises from the oblique line of thyroid lamina and inserts into the median pharyngeal raphe
thyropharyngeus
What is the purpose of the phyarngeal constrictor muscules?
narrow the diameter of the pharynx
what pharyngeal constrictor constricts the diameter of the laryngopharynx & superior orifice of the esophagus?
inferior pharyngeal constrictor m.
this portion of the inferior pharyngeal constrictor m. arises from the cricoid
cricopharyngeal muscle
what is the function of the middle pharyngeal constrictor m.?
narrows the diameter of the pharynx when contracted
what is the function of the superior pharyngeal constrictor?
pulls pharyngeal wall forward and constricts pharyngeal diameter (helping with VP closure)
this portion of the inferior pharyngeal constrictor m. is tonically contracted
cricopharyngeal muscle
what is the innervation of the stylopharyngeus?
elevates and opens the pharynx (especially during deglutition)
