Larynx Flashcards
how many cartilages are located within the larynx?
9 - 3 unpaired, 6 paired
what are the 3 unpired cartilages in the larynx?
epiglottis
thyroid
cricoid
the two lamina of thyroid cartilage join anteriorly to form what?
laryngeal prominence (adam’s apple)
what is the complete ring of hyaline cartilage that marks the inferior border of the larynx?
cricoid cartilage
where does the larynx end?
C6
the cricoid cartilage articulates with which paired cartilage?
arytenoid cartilages
cricoid pressure
applying pressure to the cricoid to occlude to oesophagus to prevent the regurgitation of gastic contents during emergy intubation
what marks the entrance to the larynx
?
epiglottis
what happens to the epiglottis during swallowing?
flattens and moves posteriorly to close larynx and prevent aspiration
what are the 3 paired cartilage of the larynx?
arytenoid
corniculate
cuneiform
where are the arytenoid cartilages found?
on the cricoid cartilage
anatomically the larynx can be divided into what 3 sections?
supraglottis
glottis
subglottis
what is the arterial supply to the larynx?
superior laryngeal artery
inferior laryngeal artery
what is the motor and sensory innervation of the larynx?
recurrent laryngeal nerve - infraglottis and all internal muscles (except cricothyroid)
superior laryngeal nerve - supraglottis and cricothyroid
what is the action of the cricothyroid muscle?
stretches and tenses vocal ligament - important in creation of forceful speech