Nasopharynx Structure and Function
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Questions and Answers

What type of epithelium is found in the nasopharynx?

  • Nonkeratinized stratified squamous epithelium
  • Keratinized stratified squamous epithelium
  • Pseudostratified ciliated columnar epithelium (correct)
  • Cuboidal epithelium
  • What is the primary function of the uvula of the soft palate?

  • To regulate breathing
  • To block material from the oral cavity and oropharynx from entering the nasopharynx (correct)
  • To aid in swallowing
  • To produce sound
  • What type of epithelium is found in the oropharynx and laryngopharynx?

  • Cuboidal epithelium
  • Pseudostratified ciliated columnar epithelium
  • Keratinized stratified squamous epithelium
  • Nonkeratinized stratified squamous epithelium (correct)
  • What is the function of the lymphatic organs in the oropharynx?

    <p>To provide the first line of defense against ingested or inhaled foreign materials (C)</p> Signup and view all the answers

    Which tonsils are located at the base of the tongue?

    <p>Lingual tonsils (D)</p> Signup and view all the answers

    What is the boundary between the oropharynx and the laryngopharynx?

    <p>The hyoid bone (B)</p> Signup and view all the answers

    What is the main function of the epiglottis in the larynx?

    <p>To prevent food and drink from entering the airway (A)</p> Signup and view all the answers

    What are the vocal folds also known as?

    <p>True vocal cords (C)</p> Signup and view all the answers

    What type of cartilage forms the epiglottis?

    <p>Elastic cartilage (D)</p> Signup and view all the answers

    What is the function of the cricoid cartilage?

    <p>To form the framework of the larynx (B)</p> Signup and view all the answers

    What nerves are responsible for innervating the larynx?

    <p>Recurrent laryngeal nerves of the Vagus (A)</p> Signup and view all the answers

    What would be the result of damaging both recurrent laryngeal nerves?

    <p>Can only whisper (A)</p> Signup and view all the answers

    What is the name of the internal ridge formed by the most inferior tracheal cartilage?

    <p>Carina (D)</p> Signup and view all the answers

    What is the function of the trachealis muscle?

    <p>to decrease the diameter of the trachea (D)</p> Signup and view all the answers

    What is the type of epithelium found in the mucous membrane of the trachea?

    <p>Pseudostratified epithelium (A)</p> Signup and view all the answers

    At what level does the trachea branch into the primary bronchi in a living, standing person?

    <p>T7 (A)</p> Signup and view all the answers

    What is the main function of the bronchial tree?

    <p>To conduct air to the lungs (A)</p> Signup and view all the answers

    What is the characteristic of the right primary bronchus compared to the left primary bronchus?

    <p>It is shorter and wider (C)</p> Signup and view all the answers

    What is the shape of each lung?

    <p>Conical (B)</p> Signup and view all the answers

    What is the function of surfactant in the alveolus?

    <p>Decreases tension (C)</p> Signup and view all the answers

    What type of cells form the lining of the alveolus?

    <p>Type I cells (B)</p> Signup and view all the answers

    What is the name of the region at the top of the lung that projects superiorly to a point above the clavicle?

    <p>Apex (A)</p> Signup and view all the answers

    What is the function of alveolar macrophages?

    <p>Engulf and digest foreign particles (C)</p> Signup and view all the answers

    What is the term for the surface of the lung that is in contact with the thoracic wall?

    <p>Costal surface (A)</p> Signup and view all the answers

    What is the main function of intercostal muscles?

    <p>To keep the thorax stiff and prevent collapse (A)</p> Signup and view all the answers

    Which of the following muscles is not involved in forced inspiration?

    <p>Pectoralis major (C)</p> Signup and view all the answers

    What happens to the rib cage during quiet expiration?

    <p>It drops under the force of gravity (D)</p> Signup and view all the answers

    Which muscles are primarily responsible for forced expiration?

    <p>Abdominal wall muscles (B)</p> Signup and view all the answers

    What is the relationship between pressure and volume according to Boyle's Law?

    <p>Pressure decreases as volume increases (B)</p> Signup and view all the answers

    What is the result of the elastic fibers in the lung recoiling during quiet expiration?

    <p>A decrease in lung volume (C)</p> Signup and view all the answers

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