CSD 155 EXAM 2 QUESTIONS WITH VERIFIED
ANSWERS
biological functions of the larynx - Answers - -foreign objects
-valving to shut off airflow for behaviors in which fixation of the thorax is necessary
(coughing, lifting, birth)
nonbiological functions of the larynx - Answers - -sound source
-provides the source for voiced speech
how many muscles are attached to the hyoid bone? - Answers - 23 total
how many cartilages are there of the larynx? - Answers - 9 total
muscular process provides a point of attachment for what? - Answers - posterior
cricoarytenoid muscle (PCA) and lateral cricoarytenoid muscle (LCA)
what is the function of the corniculate cartilages? - Answers - assists in forceful
adduction
what is the function of the epiglottis? - Answers - closes off larynx when necessary
what is the function of the cuneiform cartilages? - Answers - support and stiffen the
aryepiglottic folds especially functional in closing and opening the larynx when
swallowing
what is the vestibule? - Answers - area above the vocal folds (supra glottal space)
aryepiglottic fold is the superior margin of.. - Answers - the vestibule
what are the ventricular folds? - Answers - the false vocal folds, inferior boundary of
aditus (entry of the larynx)
what does the supraglottic space consist of? - Answers - vestibule, epiglottis,
aryepiglottic fold, and the ventricular fold
what does the infraglottic space consist of? - Answers - superior margin=vocal folds,
inferior margin=cricoid cartilage, lined with ciliated beating epithelium from bronchi all
the way to vocal folds
what is the laryngeal ventricle? - Answers - aka laryngeal sinus, between the T/F vocal
folds, inside is the mucous gland
, what is the pyriform sinus? - Answers - food trapped during swallowing when
esophagus doesn't open
what is the valleculae? - Answers - between the root of tongue and epiglottis
vocal folds are beneath what? - Answers - the false vocal folds and the laryngeal
ventricle
what two muscles are the vocal folds made up of? - Answers - ligament and epithelial
membrane
what is our whole larynx lined with? - Answers - elastic membraine
what is the glottis? - Answers - space between the vocal folds (about 20 mm long in
adults)
extrinsic muscles - Answers - 1 attachments
intrinsic muscles - Answers - origin and insertion are only within the larynx
what are the 5 intrinsic muscles? - Answers - 1. lateral cricoarytenoid (LCA)
2. arytenoid (interarytenoid- IA)
-transverse and oblique
3. posterior cricoarytenoid (PCA)
4. cricothyroid (CT)
-pars recta and pars oblique
5. thyroarytenoid
-vocalis and muscularis
what is the function of the lateral cricoarytenoid? - Answers - adduct vocal folds and
increase medial compression
what is the function of the interarytenoids? - Answers - adduct vocal folds
what is the function of the posterior cricoarytenoid? - Answers - ABDUCTS vocal folds
what is the function of the cricothryoid? - Answers - causes vocal folds to elongate
what is the function of the thyromuscularis? - Answers - relax vocal folds
what is the function of thyrovocalis? - Answers - tense vocal folds
what intrinsic muscle abducts the vocal folds? - Answers - posterior cricoarytenoid
what intrinsic muscles adduct the vocal folds? - Answers - lateral cricoarytenoid, and the
interarytenoids (transverse and oblique)
ANSWERS
biological functions of the larynx - Answers - -foreign objects
-valving to shut off airflow for behaviors in which fixation of the thorax is necessary
(coughing, lifting, birth)
nonbiological functions of the larynx - Answers - -sound source
-provides the source for voiced speech
how many muscles are attached to the hyoid bone? - Answers - 23 total
how many cartilages are there of the larynx? - Answers - 9 total
muscular process provides a point of attachment for what? - Answers - posterior
cricoarytenoid muscle (PCA) and lateral cricoarytenoid muscle (LCA)
what is the function of the corniculate cartilages? - Answers - assists in forceful
adduction
what is the function of the epiglottis? - Answers - closes off larynx when necessary
what is the function of the cuneiform cartilages? - Answers - support and stiffen the
aryepiglottic folds especially functional in closing and opening the larynx when
swallowing
what is the vestibule? - Answers - area above the vocal folds (supra glottal space)
aryepiglottic fold is the superior margin of.. - Answers - the vestibule
what are the ventricular folds? - Answers - the false vocal folds, inferior boundary of
aditus (entry of the larynx)
what does the supraglottic space consist of? - Answers - vestibule, epiglottis,
aryepiglottic fold, and the ventricular fold
what does the infraglottic space consist of? - Answers - superior margin=vocal folds,
inferior margin=cricoid cartilage, lined with ciliated beating epithelium from bronchi all
the way to vocal folds
what is the laryngeal ventricle? - Answers - aka laryngeal sinus, between the T/F vocal
folds, inside is the mucous gland
, what is the pyriform sinus? - Answers - food trapped during swallowing when
esophagus doesn't open
what is the valleculae? - Answers - between the root of tongue and epiglottis
vocal folds are beneath what? - Answers - the false vocal folds and the laryngeal
ventricle
what two muscles are the vocal folds made up of? - Answers - ligament and epithelial
membrane
what is our whole larynx lined with? - Answers - elastic membraine
what is the glottis? - Answers - space between the vocal folds (about 20 mm long in
adults)
extrinsic muscles - Answers - 1 attachments
intrinsic muscles - Answers - origin and insertion are only within the larynx
what are the 5 intrinsic muscles? - Answers - 1. lateral cricoarytenoid (LCA)
2. arytenoid (interarytenoid- IA)
-transverse and oblique
3. posterior cricoarytenoid (PCA)
4. cricothyroid (CT)
-pars recta and pars oblique
5. thyroarytenoid
-vocalis and muscularis
what is the function of the lateral cricoarytenoid? - Answers - adduct vocal folds and
increase medial compression
what is the function of the interarytenoids? - Answers - adduct vocal folds
what is the function of the posterior cricoarytenoid? - Answers - ABDUCTS vocal folds
what is the function of the cricothryoid? - Answers - causes vocal folds to elongate
what is the function of the thyromuscularis? - Answers - relax vocal folds
what is the function of thyrovocalis? - Answers - tense vocal folds
what intrinsic muscle abducts the vocal folds? - Answers - posterior cricoarytenoid
what intrinsic muscles adduct the vocal folds? - Answers - lateral cricoarytenoid, and the
interarytenoids (transverse and oblique)
