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U of D mercy Anatomy
larynx
59
Other
Graduate
10/12/2012

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Term
this is a cartilaginous organ located at the superior end of the trachea
Definition
larynx
Term
name functions of the larynx
Definition
guards air passages
maintains open air passage
vocalization
Term
How many types of cartilage make up the larynx
Definition
four
Term
this is the largest cartilage of the larynx, composed of two flat plates termed laminae
Definition
thyroid cartilage
Term
on the thyroid cartilage the flat plates called laminae fuse ________ and diverge ___________
Definition
anteriorly; posteriorly
Term
on thyroid cartilage where the laminae fuse anteriorly
Definition
laryngeal prominence (adams apple)
Term
the superior border of the thyroid cartilage forms the palpable?
Definition
superior thyroid notch
Term
this attaches via ligaments to the hyoid bone
Definition
superior horn
Term
where the thyroid cartilage articulates with the cricoid cartilage
Definition
inferior horn
Term
the thyroid cartilage is crossed by an ___________ to which strap muscles of the neck attach
Definition
oblique line
Term
this is a complete ring of cartilage that forms a shape similar to a ring;
Definition
cricoid cartilage
Term
the posterior part of cricoid cartilage in the form of a flat plate
Definition
lamina
Term
anterior part of the cricoid cartilage
Definition
arch
Term
the upper border of cricoid cartilage articulates with
Definition
arytenoid cartilages
Term
the lower border of the cricoid cartilage is connected to the____________
Definition
first ring of the trachea
Term
the first ring of the trachea is connected to cricoid cartilage via the _____________
Definition
cricotracheal ligament
Term
these are a pair of cartilages located at the upper border of the lamina of cricoid cartilages
Definition
arytenoid cartilages
Term
the base of the arytenoid cartilages exhibit these two processes
Definition
vocal and muscular process
Term
extends forward from the base of arytenoid cartilage for attachment to _________
Definition
vocal process
Term
extends laterally from arytenoid cartilage for the _________
Definition
muscular process
Term
this is a leaf shaped cartilage
Definition
epiglottic cartilage
Term
epiglottic cartilage extends superiorly and posteriorly from the _______________
Definition
thyroid cartilage
Term
lower end of epiglottic cartilage that narrows and forms the _______________
Definition
stalk( petiolus)
Term
the stalk petiolus attaches to the _________
Definition
thyroid cartilage
Term
this functions in closing the opening into the laryngeal cavity during swallowing
Definition
epiclottic cartilage
Term
these cartilages set upon the apices of the arytenoid cartilages
Definition
corniculate cartilages
Term
these cartilages are located within the fold of the mucous membrane between the arytenoid and the epiglottic cartilages
Definition
cuneiform cartilages( in the book it also says aryepiglottic folds)
Term
the extrinsic muscles of the larynx are
Definition
elevators
depressors
Term
the elevator muscles of the larynx are
Definition
thyrohyoid,stylohyoid, mylohyoid, digastric
Term
depressors of the larynx are
Definition
omohyoid, sternohyoid, sternothyroid
Term
these move the larynx as a whole
Definition
extrinsic laryngeal muscles
Term
these muscles of the larynx move parts of the larynx
Definition
intrinsic laryngeal muscles
Term
intrinsic muscle that extends from arch of cricoid to lamina of thyroid and inferior horn of thyroid cartilage
Definition
cricothyroid
Term
this intrinsic muscle extends from the posterior surface of the lamina of the cricoid to the muscular process of the arytenoid
Definition
posterior cricoarytenoid
Term
this intrinsic muscle courses from the arch of the cricoid to the muscular process of the arytenoid
Definition
lateral cricoarytenoid
Term
this intrinsic muscle connects the posterior surfaces of the two arytenoids
Definition
arytenoideus
Term
this intrinsic muscle extends from the medial surface of the lamina of the thyroid cartilage to the muscular process of the arytenoid
Definition
thyroarytenoid
Term
this intrinsic muscle courses from the internal surface of the thyroid cartilage posteriorly to the vocal process of the aryetenoid cartilage
Definition
vocalis
Term
all intrinsic muscles of the larynx except for cricothyroid are innervated by
Definition
recurrent laryngeal nerve
Term
the cricothyroid muscle is innervated by
Definition
superior laryngeal nerve
Term
this is a direct branch of the vagus that divides into two branches that supply the larynx
Definition
superior laryngeal nerve
Term
this nerve courses on the external surface of the larynx to innervate the cricothyroid muscle
Definition
external branch of superior laryngeal nerve
Term
this nerve pierces the membrane between the hyoid bone and the thyroid cartilage (thyrohyoid membrane)
Definition
internal branch of superior laryngeal nerve
Term
this is a branch of the vagus that begins in the thorax
Definition
recurrent laryngeal nerve
Term
this nerve loops around the subclavian artery
Definition
right recurrent laryngeal nerve
Term
this nerve loops around the aorta
Definition
left recurrent laryngeal nerve
Term
both these nerves ascend to the larynx in the groove between the esophagus and the trachea
Definition
right and left recurrent laryngeal nerve
Term
the cavity of the larynx is divided into these three portions
Definition
vestibule, ventricle, infraglottic cavity
Term
the three portions of larynx are separated from one another by
Definition
false and true vocal folds
Term
this portion of the larynx extends from the aditus or inlet down into the vestibular folds
Definition
vestibule
Term
the opening into the larynx form the laryngopharynx
Definition
aditus
Term
the aditus is bounded by the epiglottis ________and on each side by the aryepiglottic folds
Definition
anteriorly
Term
closure of this by the epiglottis protects airway from food
Definition
aditus
Term
this fold extends from the thyroid cartilage in front to arytenoid cartilage behind
Definition
vestibular fold(false)
Term
the space between the two folds of either side is called
Definition
rima vestibuli
Term
this allows an increase in intrathoracic pressure or intrabd pressure
Definition
rima vestibuli
Term
this attaches the epiglottis to the posterior tongue
Definition
one median glossoepiglottic fold
Term
this attaches the epiglottis to the pharynx
Definition
two lateral glossoepiglottic folds
Term
between the median and lateral folds are depressions called, important landmark for intubation
Definition
epiglottic valleculae
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