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Questions and Answers
Which structure connects the upper margin of the cricoid arch to the lower border of the thyroid cartilage?
Which structure connects the upper margin of the cricoid arch to the lower border of the thyroid cartilage?
- Cricothyroid membrane (correct)
- Median thyrohyoid ligament
- Thyroepiglottic ligament
- Hyoepiglottic ligament
What is the upper free margin of the base mucosa a reflection of?
What is the upper free margin of the base mucosa a reflection of?
- Thyroid cartilage
- Cricoid cartilage
- Mucosa on a thickening (correct)
- Vocal process of the arytenoid
Which part of the larynx is bounded anteriorly by the upper margin of the epiglottis?
Which part of the larynx is bounded anteriorly by the upper margin of the epiglottis?
- Infraglottic part
- Vocal fold
- Vestibular fold
- Supraglottic part (correct)
Which part of the larynx is the narrowest?
Which part of the larynx is the narrowest?
What is the function of the vestibular folds?
What is the function of the vestibular folds?
What is the histological structure of the superficial layer of the vocal fold known as?
What is the histological structure of the superficial layer of the vocal fold known as?
Which layer of the vocal fold is responsible for mucosal vibration?
Which layer of the vocal fold is responsible for mucosal vibration?
What is the function of the deep layer of the vocal fold?
What is the function of the deep layer of the vocal fold?
Which muscle forms the deep layer of the vocal fold?
Which muscle forms the deep layer of the vocal fold?
What are the two unique interacting components for voice production?
What are the two unique interacting components for voice production?
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?
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?
Which area in the larynx is covered by epithelium and changes classification from membrane to ligament based on the histology of the subepithelium?
Which area in the larynx is covered by epithelium and changes classification from membrane to ligament based on the histology of the subepithelium?
Which membrane extends between the epiglottis and the arytenoid cartilages in the larynx?
Which membrane extends between the epiglottis and the arytenoid cartilages in the larynx?
To which structures are the anterior and posterior margins of the quadrangular membrane attached?
To which structures are the anterior and posterior margins of the quadrangular membrane attached?
What is the thickening in the sub-epithelium of the quadrangular membrane that extends between the arytenoid cartilage and the epiglottis called?
What is the thickening in the sub-epithelium of the quadrangular membrane that extends between the arytenoid cartilage and the epiglottis called?
What is the thickening in the sub-epithelium of the quadrangular membrane that extends between the arytenoid cartilage and the thyroid cartilage called?
What is the thickening in the sub-epithelium of the quadrangular membrane that extends between the arytenoid cartilage and the thyroid cartilage called?
Which part of the larynx is covered with stratified squamous epithelium?
Which part of the larynx is covered with stratified squamous epithelium?
What are the membranes of the larynx called?
What are the membranes of the larynx called?
Which membrane extends between the arytenoid cartilage and the thyroid cartilage in the larynx?
Which membrane extends between the arytenoid cartilage and the thyroid cartilage in the larynx?
Which part of the larynx is lined with pseudostratified ciliated columnar epithelium (respiratory epithelium)?
Which part of the larynx is lined with pseudostratified ciliated columnar epithelium (respiratory 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.
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Description
Test your knowledge on the membranes and ligaments of the larynx! Identify which structures are not lined with respiratory epithelium.
