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Laryngeal Cavities
Chapters 4 and 5 laryngeal cavities
39
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Undergraduate 3
03/26/2012

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Term
Approximately what shape are the laryngeal cavities?
Definition
tube-like
Term
What narrows the laryngeal cavities
Definition
The laryngeal cartilages as they move
Term
What are the cavities of the larynx covered by?
Definition
Membranes
Term
What do changes in airflow cause?
Definition
-Changes in pitch of the voice
-Coughing
-Clearing
-All sounds
Term
What two things join all of the muscles of the larynx?
Definition
-Connective tissues
-Muscles
Term
What produces changes in airflow?
Definition
When the cartilages of the larynx (bound together by connective tissues and muscles) move.
Term
The Bernoulli Effect
Definition
Reduced pressure but greater force as the VFs adduct.
Term
Location of Aditus/Vestibule
Definition
From the entrance of the larynx to the inferior border of the cricoid cartilage; C5
Term
What is the front boundary of the aditus/vestibule?
Definition
The epiglottis (aditus is always open except for when swallowing)
Term
What are the lateral boundaries of the aditus/vestibule?
Definition
The aryepiglottic folds
Term
Posterior boundaries of the aditus/vestibule?
Definition
The apex (tips) of arytenoids
Term
The aditus is like a chamber above what?
Definition
The vocal folds
Term
Is the aditus/vestibule on the interior or exterior of larynx?
Definition
Interior
Term
The ventricle is an _______ laryngeal cavity.
Definition
Interior
Term
What is the location of the ventricle?
Definition
Between the false VFs (ventricular/vestibular folds) and the VFs
Term
What are the lateral boundaries of the ventricle?
Definition
The aryepiglottic folds
Term
What are the posterior boundaries of the ventricle?
Definition
The membranes going to the apex (tips) of arytenoids.
Term
Shape of the ventricle
Definition
-Wider in the front
-Slopes obliquely backward
-Triangular appearance
Term
What is the first cavity of the larynx?
Definition
Aditus/vestibule
Term
How many parts is the cavity of the larynx divided into?
Definition
Three
Term
What exactly divides the cavity of the larynx into its three parts?
Definition
The boundaries formed by the vestibular (false vocal) and vocal folds
Term
What are the three divisions (parts) of the laryngeal cavity?
Definition
1. Vestibule
2. Ventricle
3. Infraglottic cavity
Term
Vestibule (first division of the laryngeal cavity)
Definition
-The area ABOVE the VESTIBULAR (false vocal) folds
-Region between FVF and aditus
Term
Ventricle (second division of laryngeal cavity)
Definition
-A pocket-like recess (break) between the VESTIBULAR (false) and VOCAL FOLDS on BOTH SIDES
-Entire length of VFs
-Fatty tissue and mucous glands
Term
Infraglottic Cavity (third division of laryngeal cavity)
Definition
The area BELOW the VOCAL folds
Term
What are the different names for the false vocal folds (FVFs)?
Definition
Vestibular and ventricular folds
Term
The supraglottal region is composed of which three areas?
Definition
1. Vestibule of Larynx
2. Ventricle: laryngeal sinus
3. Ventricular/Vestibular/False Vocal Folds
Term
False Vocal Folds (FVF)
Definition
-Do not vibrate during phonation
-Attach to ARYTENOIDS and move with them
-Slightly above VFs
-False glottis space between FVF
-Has no phonatory function at all. Its only function is to protect.
Term
The _____ ______ are superior to the SUBGLOTTAL REGION
Definition
Vocal folds
Term
What is the inferior boundary of the subglottal region?
Definition
The cricoid cartilage
Term
What is the shape of the subglottal region?
Definition
Cone-shaped
Term
What type of lining is found in the subglottal region?
Definition
Columnar epithelial (also found in trachea and bronchi)
Term
How does mucous leave the subglottal region?
Definition
Cilia drive mucous up into pharynx out of respiratory tract
Term
What are the two cavities that are interior but beside the larynx?
Definition
1.Pyriform sinus
2.Valleculae
Term
Pyriform Sinus (interior and beside larynx)
Definition
-The space between the aryepiglottic fold and the thyroid cartilage
-Small cavity above laryngeal opening and just above opening to esophagus
-A deep depression
Term
What are the lateral borders of the pyriform sinus?
Definition
Thyroid cartilage and thyrohyoid membrane
Term
What is the medial border of the pyriform sinus?
Definition
Aryepiglottic folds
Term
The pyriform is often described as part of the pharynx. Why?
Definition
Because it is superior and lateral to the aditus.
Term
Valleculae (interior and beside larynx)
Definition
The space b/w the tongue and epiglottis
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