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37 Cards in this Set

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What is the significance of the retropharyngeal space?
Retropharyngeal abscesses or infection may spread from terh neck into the posterior mediastinum through the retropharyngeal space to meninges
State the two muscles which open the eustaschian tube!
Tensor Veli palatini M
salpingopharyngeus M
State the innervation of the constrictor muscles
CN X difficulty swallowing common following a stroke
What is the only pharyngeal muscle not innervated by the CN X?
Stylopharyngeaus M (CN IX)
What is the only tounge muscle innervated by CN X?
platoglossus
State the colloquial term for the larynx?
Voicebox
At what vetebral level is the larynx situated?
C3 - C6
What cartilage is palpable inferior to the thyroid cartilage?
Cricoid cartilage
What is unique about the cricoid cartilage?
It is the only complete ring of cartilage in the larynx
The three unpaired cartilages of the larynx are:
- epiglottic
- thyroid
- cricoid
The 3 paired cartilages are:
- arytenoid
-corniculate
-cuneiform
What are the true vocal cords?
The vocal cords which are comprised of the vocal ligaments and the conus elaticus
What is the rima glottidis?
It is the space b/w the vocal folds and the arytenoid cartilages'

It is the narrowest part of the laryngeal cavity
What 2 groups of muscle make-up the laryngeal musculature?
The extrinsic and intrinsic muscles
The extrinsic muscles...
move the entire larynx
The intrinsic muscles
move the paired cartilages and vocal cords
Describe the thyroids blood supply!
External carotid artery --> superior thyroid artery, subclavian artery --> thyrocervical trunk --> inferior thyroid artery
The inferior thryoid artery is a branch of what vessel?
thryocervical trunk
Action of cricothyroid tenses
tightens the vocal cords
Action of posterior cricoarytenoid
abduction, opens the vocal cords
action of lateral cricoarytenoid
adduction of vocal cords
action of transverse arytenoid
adduction of the vocal cords
action of vocalis & thyroarytenoid
shortening (relaxing) of vocal cords
___ innervates all intrinsic muscles of the larynx (except cricothyroid)
Inferior Laryngeal Nerve
The cricothyroid is innervated by
External Laryngeal Nerve
The left recurrent laryngeal nerve hooks around...
Arch of aorta
The right recurrent laryngeal nerve hooks around
the right Brachocephalic vessels
What is the lay mans term for the laryngeal prominence?
The Adam's Apple
What is the function of the epiglottis?
The epiglottis falls down over the opening of the larynx during swallowing to stop food aspiration.
Where is the cuneiform cartilage?
The cuneiform cartilages are contained in the aryepiglottic folds.
What are the aryepiglottic folds?
Folds of tissue housing the cunefiform cartilage that forms the lateral border of the inlet to the larynx
What are the false vocal cords?
Vestibular folds/ vestibular ligaments
Define a cricothyroidotomy
This is an emergency procedure to establish an airway when your patient cannot be intubated.

You will incise the cricothyroid ligament and pass a tube into the trachea.
What embryonic remnant do we find in the area (around the arch of the aorta)?
Ligamentum Arteriosum
The 5 layers of the pharynx are (internal to external0
1. pharynx
2. mucus membrane
3. constrictor muscles
4. buccopharyngeal fascia
5. retropharyngeal space
What is the conus elasticus?
it is the elastic membrane b/w the vocal ligaments and the cricoid cartilage
The 5 key players of interior of larynx:
1. laryngeal cavity
2. laryngeal vestibule
3. laryngeal ventricles
4. infralgottic cavity
5. rima glottidis