LING 2P90 Lecture Notes - Cricothyroid Ligament, Aryepiglottic Fold, Vestibular Fold

30 views2 pages
Published on 24 Nov 2012
Department
Course
October 24, 12
Laryngeal Apparatus Cont’d
Test: Only have to know up to the spaces in the Laryngeal
Intrinsic Laryngeal Membranes
Quadrangular membranes:
o Paired sheets of elastic tissue
o Epiglottis and thyroid cartilage to corniculate cartilages and medial
surfaces of arytenoid cartilages
o Inferior edges from ventricular ligaments
o Superior edges form Ventricular ligaments
o Folds contain aryepiglottic muscle fibers
Conus Elasticus
o Connects arytenoid, thyroid, and cricoid cartilages
o Medial Cricothyroid ligament and 2 lateral Cricothyroid membranes
(main portion)
o Lateral cricothyroid membranes begin at superior edge of cricoid
cartilage (form the vocal ligaments)
Pyriform Sinuses
o Lateral to aditus larynges (one on each side)
o Bounded by thyroid cartilage and thyrohyoid membrane (laterally)
and aryepiglottic folds and quadrangular membrane (medially)
Space between the “true” vocal folds = Rima glottides (glottis)
Supra-glottal Space
o Vestibule = space between aditus and ventricular folds
o Ventricle = Space between ventricular folds and vocal folds
Sub-glottal spaces
o Below vocal folds to inferior border of cricoid cartilage
o Cone-shaped (narrowest at vocal folds, wider below)
Rima Glottidis
o Anterior commissure (where the vocal folds meet) to bases of
arytenoid cartilages
o Configuration of the glottis is highly variable
The vocal folds coming together
Configuration that is normal in young women is a “glottal gap”,
its effect is to produce a slightly breathy voice
o Membranous Glottis (anterior commissure to the vocal processes)
3/5ths
o Cartilaginous Glottis (vocal processes to arytenoid cartilages) 2/3rds
Mucous Membrane
Covers whole laryngeal cavity
o Same as lining of mouth and trachea
Ventricles especially rich in mucous glands (important for hydration)
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
Monthly
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.