Larynx Flashcards
Phonation meaning
voice production
Where is hyoid located?
C3
where is superior border od thyroid cartilage?
C4
where is laryngotrachael junction?????
C6-c7 IMPORTNAT
name the 3 unpaired cartilages of larynx
Cricoid
Thyroid
Epiglottis
pneumonic for laryngeal cartilage
UnprePrAIED?
Creep
The E
Exit
Prepaired?
Arrive
Cassually
Calm
3 paired cartilage of larynx
Arytenoid
Corniculate
Cuneiform
What does artynoid base articulate with?
Cricoid
What does arytnoid apex articulate with?
corniculate (and cunieform)
What mm attach to anterolateral surface of arytnoid?
vocalis and vestibular ligament
Which is the smallest cartilage and whats unique about it>
Cuneifrom, suspended in fibroelastic membrane of larynx.
What does the cricoid form?
base of larynx
What is the laryngeal prominence better known as and where is it found?
adams apple, thyroid cartilage
What are the 2 horns od thyroid known as ?
superior and inferior
where does epiglottis attach?
B/w larungeal prominence and inferior thyroid notch
Name the 3 laryngeal membranes
Thyrohyoid
Quadrangular
Cricothyroid
Laryngeal membrane mneumonic
Larry
Thought
Critically
Quickly
Laryngeal ligaments: name 3
Cricotrachael
Vocal (inferior)
Vestibular (superior)
Mouth lower than ears.
Laryngeal ligaments nmeumonic
Larry
Cant
Vocalise
Verbally
Vocal fold lie inferiorly to?
Vestibular folds
Rima vestibuli
opens between vestibular folds
Rima glotiis
opens between vocal folds
What nerve and branch innervate the intrinsic laryngeal mm.
CN X -> reccurent laryngeal branch
Post. crico-arytenoid mm action
rotation and abduction of arytenoid
Lat crico-arytenoid mm. action
medial rotation and adduction of vocal fold
transverse arytenoid action
Adduct arytenoids
oblique arytenoid
sphincter muscles
vocalis/ thyroid arytenoid
adjusts the tension of vocal folds
Cricothyroid
will move and rotate vocal fold forwards causing INCREASE TENSION
Cricothyroid innervation and branch
CN X superior laryngeal nerve
Arterial blood supply to larynx?
Superior laryngeal Aa.
Inferior laryngeal Aa.
what artery does inferior laryngeal branch from?
thyrocervical trunk
where does superior laryngeal vein drain to?
internal jugular
inferior laryngeal vein drainage
brachiocephalic
venous drainage of larynx
superior and inferior laryngeal vein
where does the inferior laryngeal vein and artery branch?
artery = thyrocervical vein = brachiocephalic
Where does the right and left reccurent vagus nerves origante and travel
Right : in neck passes by subclavian
Left: thorax passes under aorta.
What nerve provides sensory innervation for neck??
CN X
Which membrane will superior laryngeal nerve perforate?
thyroid membrane
Which is only muscle to open the glottis?
and what would happen without it?
Post chricoarytenoid.
Cant open glottis
