Anatomy and Physiology of Throat Flashcards
anatomy in powerpoint
name for mucosa of lips and cheeks
buccal
tongue innervation
Anterior 2/3rd:
▪ general sensation by lingual nerve from mandibular V3 trigeminal
▪ Taste by chorda tympani from facial
(branch of CN VII)
Posterior 1/3rd:
▪ supplied by CN IX Glossopharyngeal
what papillae do not contain taste buds
filiform
functions of intrinsic and extrinsic muscles of tongue
intrinsic alter shape
extrinsic alter position
nerve supply to tongue muscles
hypoglossal XII to all
except palatoglossus- pharyngeal plexus CN IX and X- glossopharyngeal and vagus
4 muscles of mastication
nerve supply
function
1.Lateral pterygoid
2.Medial pterygoid
3.Temporalis
4.Masseter
Nerve supply:
* CN V3- mandibular trigeminal
Function:
* Acting on TMJ
epithelium in oropharynx
stratified squamous non keritinsing
nerve supply to oropharynx
pharyngeal plexus- glossopharyngeal and vagus IX and X
nerve supply to hypopharynx
pharyngeal plexus
nerves of swallowing reflex
afferent: CN V, IX, X (trigeminal, glossopharyngeal, vagus)– swallowing centre
in medulla
efferent: CN VII, X, XII (facial, vagus, hypoglossal)
5, 9, 10
7, 10, 12
what plexus controls peristalsis down oesophagus
myenteric
what are the 2 pink muscles
what do they do
light = posterior cricoid arytenoid- open and aduct cords
dark = thyroaratynoid- loosen cords
what does the green, puprle and blue muscles do
green = lateral cricoid aratynoid
purple = obliqur aratynoids
blue = transverse aratynoids
all close vocal chords
intrinsic muscles of the larynx x5
and functions
posterior cricoid arytenoid- opens and adducts chords
thyroid arytenoid- loosen cords
rest closes:
oblique arytenoid- close chords
transverse arytenoid- closes chords
lateral cricoid arytenoid- closes chords
