20 Questions
Which structure connects the upper margin of the cricoid arch to the lower border of the thyroid cartilage?
Cricothyroid membrane
What is the upper free margin of the base mucosa a reflection of?
Mucosa on a thickening
Which part of the larynx is bounded anteriorly by the upper margin of the epiglottis?
Supraglottic part
Which part of the larynx is the narrowest?
Rima Glottidis
What is the function of the vestibular folds?
Moistening the mucosal surface
What is the histological structure of the superficial layer of the vocal fold known as?
Reinke's space
Which layer of the vocal fold is responsible for mucosal vibration?
Intermediate layer of the lamina propria
What is the function of the deep layer of the vocal fold?
Supporting the mucosa
Which muscle forms the deep layer of the vocal fold?
Thyroarytenoid muscle
What are the two unique interacting components for voice production?
Neurological adduction and mucosal vibration
Which type of epithelium lines all structures in the larynx except for the vocal folds, aryepiglottic folds, anterior surface, and upper half of the posterior surface of the epiglottis?
Stratified squamous epithelium
Which area in the larynx is covered by epithelium and changes classification from membrane to ligament based on the histology of the subepithelium?
Quadrangular membrane
Which membrane extends between the epiglottis and the arytenoid cartilages in the larynx?
Quadrangular membrane
To which structures are the anterior and posterior margins of the quadrangular membrane attached?
Epiglottis and arytenoid cartilages
What is the thickening in the sub-epithelium of the quadrangular membrane that extends between the arytenoid cartilage and the epiglottis called?
Aryepiglottic fold
What is the thickening in the sub-epithelium of the quadrangular membrane that extends between the arytenoid cartilage and the thyroid cartilage called?
Vestibular fold
Which part of the larynx is covered with stratified squamous epithelium?
All of the above
What are the membranes of the larynx called?
Quadrangular membrane and Conus Elasticus
Which membrane extends between the arytenoid cartilage and the thyroid cartilage in the larynx?
Vestibular fold
Which part of the larynx is lined with pseudostratified ciliated columnar epithelium (respiratory epithelium)?
All structures in the larynx are lined with this epithelium
Study Notes
Larynx Structure and Functions
- The cricothyroid ligament connects the upper margin of the cricoid arch to the lower border of the thyroid cartilage.
- The upper free margin of the base mucosa is a reflection of the vestibular folds.
Laryngeal Regions
- The laryngeal vestibule is bounded anteriorly by the upper margin of the epiglottis.
- The glottis, which includes the vocal folds, is the narrowest part of the larynx.
Vocal Folds
- The vestibular folds, also known as the false vocal folds, have no role in voice production.
- The superficial layer of the vocal fold is composed of stratified squamous epithelium.
- The intermediate layer of the vocal fold, responsible for mucosal vibration, is composed of the lamina propria and the vocal ligament.
- The deep layer of the vocal fold, composed of the thyroarytenoid muscle, regulates vocal fold tension.
Laryngeal Epithelium
- All structures in the larynx, except for the vocal folds, aryepiglottic folds, anterior surface, and upper half of the posterior surface of the epiglottis, are lined with pseudostratified ciliated columnar epithelium (respiratory epithelium).
- The quadrangular membrane is covered by epithelium that changes classification from membrane to ligament based on the histology of the subepithelium.
Membranes of the Larynx
- The quadrangular membrane extends between the epiglottis and the arytenoid cartilages.
- The anterior and posterior margins of the quadrangular membrane are attached to the epiglottis and the arytenoid cartilages, respectively.
- The thickening in the sub-epithelium of the quadrangular membrane that extends between the arytenoid cartilage and the epiglottis is called the vestibular ligament.
- The thickening in the sub-epithelium of the quadrangular membrane that extends between the arytenoid cartilage and the thyroid cartilage is called the vocal ligament.
- The cricovocal membrane extends between the arytenoid cartilage and the thyroid cartilage.
- The vocal folds are lined with stratified squamous epithelium.
Test your knowledge on the membranes and ligaments of the larynx! Identify which structures are not lined with respiratory epithelium.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
