Anatomy of Larynx Quiz: Dr. Israa Khalil
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Questions and Answers

What is the main function of the larynx?

  • Responsible for voice production (correct)
  • Generating heat for the body
  • Assisting in digestion
  • Providing a sphincter to close the upper respiratory tract

    • Where is the larynx situated in the human body?

  • Next to the kidneys
  • Below the diaphragm
  • Within the thoracic cavity
  • Above the tongue and hyoid bone (correct)

    • What forms the framework of the larynx?

  • Only ligaments
  • Cartilages interconnected by ligaments and membranes (correct)
  • Only muscles
  • Fibrous tissue

    • Which structure of the larynx is the largest cartilage?

    <p>Thyroid cartilage</p> Signup and view all the answers

    What extends upward and downward from the posterior border of the thyroid cartilage?

    <p>Inferior and superior cornu</p> Signup and view all the answers

    What is the angle between the two laminae of the thyroid cartilage in men and women?

    <p>$90^\circ$ in men and $120^\circ$ in women</p> Signup and view all the answers

    Which cartilage completely encircles the airway and has facets for articulation with the inferior cornu of the thyroid cartilage?

    <p>Cricoid cartilage</p> Signup and view all the answers

    Which ligament connects the upper margin of the thyroid cartilage to the hyoid bone?

    <p>Thyrohyoid ligament</p> Signup and view all the answers

    Where are the cuneiform cartilages found?

    <p>In the aryepiglottic folds</p> Signup and view all the answers

    Which cartilages are pyramid-shaped and sit on the cricoid cartilage with facets for articulation with the arytenoid cartilage?

    <p>Arytenoid cartilages</p> Signup and view all the answers

    What is the shape of the cricoid cartilage and how is it positioned in relation to the thyroid cartilage?

    <p>Signet ring shape, below the thyroid cartilage</p> Signup and view all the answers

    Which ligament connects the inferior end of the epiglottic cartilage to the posterior median aspect of the thyroid lamina?

    <p>Thyroepiglottic ligament</p> Signup and view all the answers

    What is the function of the cuneiform cartilages?

    <p>To strengthen the aryepiglottic folds</p> Signup and view all the answers

    What does the thyrohyoid membrane connect?

    <p>The upper margin of the thyroid cartilage to the hyoid bone</p> Signup and view all the answers

    What is composed of two parts, namely upper quadrangular membrane and lower cricothyroid ligament?

    <p>Fibro-elastic membrane of the larynx</p> Signup and view all the answers

    Where is the larynx situated in the human body?

    <p>The larynx is situated below the tongue and hyoid bone, opening above into the laryngeal part of the pharynx, and below is continuous with the trachea.</p> Signup and view all the answers

    What is the main function of the larynx?

    <p>The main function of the larynx is to provide a sphincter to close the lower respiratory tract and to be responsible for voice production.</p> Signup and view all the answers

    What forms the framework of the larynx?

    <p>The framework of the larynx is formed of cartilages that are interconnected by ligaments and membranes, moved by muscles, and lined by mucous membrane.</p> Signup and view all the answers

    What are the three large unpaired cartilages of the larynx?

    <p>The three large unpaired cartilages of the larynx are the thyroid, cricoid, and epiglottis.</p> Signup and view all the answers

    What is the shape of the cricoid cartilage and how is it positioned in relation to the thyroid cartilage?

    <p>The cricoid cartilage is a complete ring of cartilage, positioned below the thyroid cartilage, and it forms the inferior boundary of the larynx.</p> Signup and view all the answers

    Where are the cuneiform cartilages found?

    <p>The cuneiform cartilages are found in the aryepiglottic fold, which extends from the epiglottis to the arytenoid cartilage.</p> Signup and view all the answers

    What are the two small conical cartilages whose bases articulate with the arytenoid cartilages?

    <p>Corniculate cartilages</p> Signup and view all the answers

    What is the function of the cricotracheal ligament?

    <p>It connects the cricoid cartilage to the first ring of the trachea.</p> Signup and view all the answers

    Where are the cuneiform cartilages located?

    <p>In the aryepiglottic folds</p> Signup and view all the answers

    What is the shape of the cricoid cartilage and how is it positioned in relation to the thyroid cartilage?

    <p>It is shaped like a signet ring, lying below the thyroid cartilage and completely encircling the airway.</p> Signup and view all the answers

    What is the main function of the thyrohyoid membrane?

    <p>It connects the upper margin of the thyroid cartilage to the hyoid bone.</p> Signup and view all the answers

    What are the two parts of the fibro-elastic membrane of the larynx?

    <p>Upper quadrangular membrane and lower cricothyroid ligament (cricovocal membrane and cricothyroid membrane)</p> Signup and view all the answers

    What is the anatomical significance of the arytenoid cartilages?

    <p>They articulate with the corniculate cartilage and serve as attachment points for vocal cords.</p> Signup and view all the answers

    How is the epiglottis attached to the laryngeal structures?

    <p>Its stalk is attached to the back of the thyroid cartilage via thyro-epiglottic ligament, and its sides are attached to the arytenoid cartilages by the aryepiglottic folds of mucous membrane.</p> Signup and view all the answers

    What is the function of the hyoepiglottic ligament?

    <p>It connects the anterior surface of the epiglottis to the body of the hyoid bone.</p> Signup and view all the answers

    What structures complete the architectural framework of the laryngeal cavity?

    <p>The intrinsic membrane of the larynx</p> Signup and view all the answers

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