23 Questions
What type of epithelium is present in the larynx?
Pseudostratified ciliated columnar epithelium
What is the function of the Bowman glands in the olfactory region?
They secrete serous fluid
What is the difference between the right and left bronchi?
The right bronchus trifurcates and the left bronchus bifurcates
What is the function of the goblet cells in the respiratory epithelium?
They secrete mucin
What is the layer of the trachea that contains cartilage?
Cartilaginous layer
What is the type of epithelium present in the pharynx?
Stratified squamous epithelium
What type of epithelium is present in the bronchioles?
Ciliated simple columnar epithelium
What is the function of Type II pneumocytes?
Secreting surfactant and acting as progenitor cells
Which type of cells are capable of cell division?
Type II pneumocytes
What is the primary function of the blood–air barrier?
Exchange of gases
Which of the following is NOT a function of Type II pneumocytes?
Synthesis of mucinogen
What is the characteristic of the bronchioles' walls?
They have no cartilage in their walls.
What is the function of the secretory product of club cells in the bronchioles?
It protects the bronchiolar epithelium.
What is the shape of the epithelium in the respiratory bronchioles?
Simple cuboidal and squamous
What type of cells are found in the alveolar epithelium?
Type I and II alveolar cells, and occasional brush cells
What is the purpose of the elastic fibers in the bronchioles?
To facilitate the expansion and contraction of the bronchioles during breathing.
What is the characteristic of the lamina propria in the bronchioles?
It is surrounded by a loose meshwork of helically oriented smooth muscle layers.
What is the primary function of the olfactory mucosa in the nasal cavities?
To carry stimuli for the sense of smell
Which of the following cell types in the respiratory mucosa is responsible for monitoring oxygen and carbon dioxide levels?
Small granule cells or Kulchitsky
What is the primary function of the bronchus-associated lymphoid tissue (BALT)?
To regulate immune responses to inhaled antigens
Which of the following structures is NOT part of the conducting portion of the respiratory system?
Alveolar ducts
What is the primary function of the ciliated cells in the respiratory mucosa?
To move mucus out of the airway
Which of the following is a function of the respiratory system?
To regulate immune responses to inhaled antigens
Identify the histologic characteristics and functions of the respiratory system, including the conducting and respiratory portions. Test your knowledge with exam-like questions.
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