Pharynx & Larynx Flashcards
boundaries of nasopharynx
base of skull, palate…. choanae to superior constrictor
boundaries of oropharynx
palate, above hyoid…. palatoglossal folds to constrictors
boundaries of laryngopharynx
hyoid to cricoid….. hyoid to lower border of cricoid
tensor palatini attaches here
scaphoid fossa
forms jaws, malleus incus
arch 1
forms auditory tube, middle ear, auditory meeatus
1st pouch
forms stapes, styloid process, stylohyoid ligament, lesser horns of hyoid
2nd arch
forms palatine tonsil
2nd pounch
forms body and greater horns of hyoid
3rd arch
forms thymus and inferior parathyroid
3rd pouch
forms thyroid cartilage
4th arch
forms superior parathyroid
4th pouch
forms laryngeal cartilages
5th arch
forms ultimobranchial body which may contribute to thyroid
5th pouch
forms arytenoids, cricoid, and tracheal rings
6th arch
fascia stripped to see pharynx
buccopharyngeal
fascia above superior constrictor
pharyngobasilar fascia
muscle coming from medial end of auditory tube to thyroid lamina
salpingopharyngeus
4 longitudinal muscles
salpingopharyngeus, palatopharyngeus, stylopharyngeus, stylohyoid
longitudinal muscles action
elevate and open csontrictors to begin peristalsis
where nerve supply changes… gag reflex
sulcus terminalis/foramen caecum
pharyngeal tonsils (aka adenoids)… are located more in the blank
nasopharynx
aryepiglottic folds are reinforced by blank which forms tips of arytenoid
corniculates
membrane from epiglottis to arytenoid
quadrangular membrane
membrane that is infraglottic
conus elasticus
space between vocal folds
rima glottidis
this abducts vocal folds
posterior cricoarytenoids
these adduct vocal folds
transverse/oblique arytenoids, cricothyroids, throarytenoids, lateral cricoarytenoids
main function of vocal cords
protect airway
fibers in CN IX
GS aud tube, middle ear, posterior 3rd of tongue….
taste posterior 3rd of tongue
motor to stylopharyngeus
fibers in CN X
GS - lower half of pharynx to all thorax and abdomen
Taste -
Motor - all pharynx muscles except stylopharyngeus, all muscles of palate (except tensor palatini), all larynx muscles
part of thyroarytenoid on the vocal ligaments
vocalis
largest sympathetic ganglion in neck
superior cervical ganglion
inferior cervical ganglion is near 1st rib and forms this ganglion
stellate
pharynx develops from blank and is composed of blank muscles
vagal somites, striated muscles
All sympathetically in the neck are blank and the last place they can synapse is in the blank
Postganglionic, superior cervical ganglion
