CN9 + CN10 Flashcards
what vertebral lvls is the voice box at
C4-6 (continues into trachea after that)
what are the 3 singular cartilages of the larynx
Epiglotis
Thyroid cartilage
cricoid
what does the cricothyroid jt allow for
synovial jt that allows thyroid catilage to move ant for the vocal cords
what does the crico-arytenoid synovial jt allow for
mvmt around the vetical axis (can tense/relax vocal cords
what nerves enter the sup and inf larynx
Sup larangeal n–> Internal larangeal n
Reccurent larangeal –> inf larangeal n
where do the vocal cords extend from
extend from internal surface of thyroid angle to vocal process of arytenoid cartilage
where do the vestibular folds extend from
flase vocal cords sup to true vocal cords
Extend from thyroid to arytenoid cart
what is the space between the vocal cords called
rima glttidis
what innerbates above and below vocal cords
above- Internal laryngeal
below- inf laryngeal (of reccurent)
laryngeal carcinoma symptoms/location
mc location is on vocal cords
-will cause horseness in voice, lump in nek etc
What is the tensor of the vocal cord and inn
Cricothyroid
Ext branch of sup laryngeal
what is the relaxor of vocal folds and inn
Vocalis
Inf larangeal of reccurent
What are the adductors of the vocal folds and inn (3)
- Transverse Arytenoid
- Oblique Arytenoid
- Lat Crico-Arytenoid
Inf larangeal of recuurent
what is the abductor of vocal folds and inn
Post crico-Arytenoid
Inf larangeal of recurrent
5 components of vagus nerve
Genral sensory- from auricle
Special taste- root of tongue
General sensory- larynx, esophogus, viceral
Motor- mm of soft palate/ pharynx, larynx
Motor- viceral organs
