Respiratory System Histology
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Questions and Answers

What type of epithelium is present in the larynx?

  • Simple columnar epithelium
  • Cuboidal epithelium
  • Stratified squamous epithelium
  • Pseudostratified ciliated columnar epithelium (correct)

What is the function of the Bowman glands in the olfactory region?

  • They produce a rich vascular plexus
  • They secrete serous fluid (correct)
  • They house collections of axons
  • They help to detect odorants

What is the difference between the right and left bronchi?

  • The right bronchus is lined by stratified squamous epithelium
  • The right bronchus trifurcates and the left bronchus bifurcates (correct)
  • The left bronchus is lined by pseudostratified ciliated columnar epithelium
  • The right bronchus is shorter than the left bronchus

What is the function of the goblet cells in the respiratory epithelium?

<p>They secrete mucin (A)</p> Signup and view all the answers

What is the layer of the trachea that contains cartilage?

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

What is the type of epithelium present in the pharynx?

<p>Stratified squamous epithelium (B)</p> Signup and view all the answers

What type of epithelium is present in the bronchioles?

<p>Ciliated simple columnar epithelium (A)</p> Signup and view all the answers

What is the function of Type II pneumocytes?

<p>Secreting surfactant and acting as progenitor cells (D)</p> Signup and view all the answers

Which type of cells are capable of cell division?

<p>Type II pneumocytes (A)</p> Signup and view all the answers

What is the primary function of the blood–air barrier?

<p>Exchange of gases (D)</p> Signup and view all the answers

Which of the following is NOT a function of Type II pneumocytes?

<p>Synthesis of mucinogen (C)</p> Signup and view all the answers

What is the characteristic of the bronchioles' walls?

<p>They have no cartilage in their walls. (A)</p> Signup and view all the answers

What is the function of the secretory product of club cells in the bronchioles?

<p>It protects the bronchiolar epithelium. (A)</p> Signup and view all the answers

What is the shape of the epithelium in the respiratory bronchioles?

<p>Simple cuboidal and squamous (B)</p> Signup and view all the answers

What type of cells are found in the alveolar epithelium?

<p>Type I and II alveolar cells, and occasional brush cells (A)</p> Signup and view all the answers

What is the purpose of the elastic fibers in the bronchioles?

<p>To facilitate the expansion and contraction of the bronchioles during breathing. (B)</p> Signup and view all the answers

What is the characteristic of the lamina propria in the bronchioles?

<p>It is surrounded by a loose meshwork of helically oriented smooth muscle layers. (D)</p> Signup and view all the answers

What is the primary function of the olfactory mucosa in the nasal cavities?

<p>To carry stimuli for the sense of smell (C)</p> Signup and view all the answers

Which of the following cell types in the respiratory mucosa is responsible for monitoring oxygen and carbon dioxide levels?

<p>Small granule cells or Kulchitsky (A)</p> Signup and view all the answers

What is the primary function of the bronchus-associated lymphoid tissue (BALT)?

<p>To regulate immune responses to inhaled antigens (B)</p> Signup and view all the answers

Which of the following structures is NOT part of the conducting portion of the respiratory system?

<p>Alveolar ducts (C)</p> Signup and view all the answers

What is the primary function of the ciliated cells in the respiratory mucosa?

<p>To move mucus out of the airway (A)</p> Signup and view all the answers

Which of the following is a function of the respiratory system?

<p>To regulate immune responses to inhaled antigens (B)</p> Signup and view all the answers

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