Larynx Flashcards
what are the 2 types of cartilage in laryngopharynx
thyroid cartilage
cricoid cartilage
what are the 3 regions of the larynx
vestibule
ventricle
infraglottic
where does the vestibule region lie
between inlet and vestitublar folds
where does the ventricle lie
between the vestibular and vocal folds
where does the infraglottic lie
inferior to the vocal folds and above trachea
what are the 3 unpaired cartilage
thyroid
cricoid
and epiglottis
what are the 3 paired cartilage
aryternoid
corniculate
triticeal
what holds the epiglottic up and out of the way for breathing?
hyo-epiglottic ligament
where is the thyroepiglottic ligament found?
attaching the epiglottis to the thyroid cartilage
inferior on the epiglottis
where does the extrinsic muscles of the larynx attach to the thyroid cartilage?
oblique line
what attaches to the superior horn of the thyroid cartilage?
lateral thyrohyoid ligaments to the hyoid bone
what does the inferior thyroid cartilage articulate with?
cricoid cartilage
what are the 3 extrinsic muscles of the larynx
sternothyroid, thyrohyoid, and inferior constrictor m
what kind of cartilage is the cricoid and thyroid cartilage made up
hyaline
where does the vocal cords attach?
vocal processes on arytenoid cartilage
what lies in aryepiglottic fold?
corniculate cartilage
what kind of cartilage is corniculate
elastic
what kind of cartilage is cuneiform
hyaline
what fold helps move the epiglottis to cover laryngeal inlet?
ary-epiglottic fold
what other cartilage is paired, lies in posterior fold of thyrohyoid membrane and isn’t always present?
triticeal cartilage
what kind of joints are between the cricoid and thyroid cartilages
synovial joints
what holds the cricothyroid joints together
cricothyroid ligaments
what is the function of the cricothyroid joints?
helps anteriorly tilt the thyroid cartilage
where does the external laryngeal n go to
cricothyroid membrane/muscle
where goes to the thyrohyoid membrane
internal laryngeal n
what membrane runs from the epiglottis to the vestibular folds?
quadrangular membrane
what is under the quadrangular membrane
aryepiglottic m
what does the inferior laryngeal n innervate
intrinsic muscles of the larynx
what does the vestibular fold cover
vestibular ligament
which fold is the false vocal cords
vestibular fold
what covers the vocal ligament?
vocal fold
which fold is the true vocal cords
vocal fold
what are the 4 spaces of the larynx
aditus
vestibule
ventricle
infraglottic cavity
what is the outpocketing in between the true and false vocal cords
laryngeal ventricle
what is the superior border of the cricoid thyroid ligament
true vocal fold
what is the space called between the two vestibular folds
rima vestibuli
what is the space between two true vocal folds
rima glottidis
where can food get stuck and you need the heimlinch maneuver done?
vestibule
what causes tilting of the thyroid cartilage anteriorly
cricothyroid muscle
what is the only muscle to do abduction
posterior crico-arytenoid
what muscles adduct
transverse arytenoid
lateral crico-arytenoid
oblique arytenoid
which 2 muscles pull the epiglottis over the laryngeal inlet to protect airway
ary-epiglottic part of oblique arytenoid m
thyro-epiglottic part of thyro-arytenoid m
what is the function of the thyro-artyenoid and vocalis muscles
relaxation of the vocal ligament
relaxation and tension of the vocal ligaments causes what?
different pitches and sounds
what muscles does laryngospasm deal with?
posterior cryoarytenoid mm
laryngospam is spasmodic closure of ____
glottis
what can laryngospasm cause
death due to not being able to breath
what supplys upper larynx?
superior laryngeal a
what gives off superior laryngeal a?
superior thyroid a from ECA
what supplies lower larynx
inferior laryngeal a
what gives off inferior laryngeal a?
inferior thyroid a from thyrocervical trunk
innervates thyrohyoid membrane?
internal laryngeal n
innervates cricothyroid muscle?
external laryngeal n
what gives off internal and external laryngeal nerves?
superior laryngeal from CN X
injury to internal laryngeal n?
causes sesnory loss to superior larynx
injury to inferior laryngeal n?
paralysis ipilateral
hoarseness
inferior laryngeal n is ___ control of larynx
MOTOR
sensory loss is a danger to ___
choking
