30 Questions
What is the primary function of the conducting portion of the respiratory system?
Cleaning and moistening inhaled air
Which of the following is NOT a function of the respiratory system?
Regulating blood pressure
Which of the following is a part of the conducting portion of the respiratory system?
Larynx
What is the main function of the mucus and kinocilia in the respiratory system?
Removing particles from inhaled air
Which cell type is found in the alveolar epithelium?
Alveolar type I and type II cells
What is the purpose of the turbinates (conchae) in the respiratory system?
Heating the inhaled air
What type of epithelium covers the middle and lower turbinates?
Respiratory epithelium
Which part of the nose traps large particles entering with inhaled air?
Vestibule
What type of epithelium is specific to the olfactory region?
Pseudostratified columnar ciliated epithelium
Which structure contributes to the heating and humidification of inhaled air by creating turbulence?
Middle conchae
What is the majority of the nasal cavity volume made up of?
Respiratory portion
Which part of the nasal cavity has a rich vascular network in its lamina propria?
"Respiratory portion"
What type of epithelium is present in larger bronchioles?
Pseudostratified ciliated columnar epithelium
What structures are absent in bronchioles?
Glands and cartilage
What type of cells do terminal bronchioles contain?
Cuboidal and clara cells
What characterizes clara cells?
Have secretory granules in their cytoplasm
Which part of the air conduction system is just before the gas exchange zones?
Terminal bronchioles
What happens to the epithelium in very small bronchioles?
Turns into single-layered fibrillar cuboidal epithelium
Which of the following statements about supporting cells is correct?
They provide mechanical and metabolic support to olfactory cells.
What is the primary function of basal cells in the olfactory epithelium?
To replace olfactory neurons and supporting cells.
Which of the following structures is responsible for providing a constant flow of fluid around the olfactory hairs?
Olfactory glands
What type of epithelium is found in the nasopharynx?
Respiratory epithelium
Which of the following statements about the larynx is correct?
It is approximately 4cm x 4cm in size.
Which of the following structures is NOT part of the olfactory epithelium?
Bowman's glands
What is the primary function of the cartilages in the larynx?
All of the above
What type of epithelium is present on the side of the epiglottis facing the tongue?
Stratified squamous epithelium
How many C-shaped hyaline cartilage rings are typically present in the trachea?
Approximately 12
What is the primary function of the C-shaped hyaline cartilage rings in the trachea?
To strengthen the tracheal wall and keep the lumen open
What type of glands are present in the lamina propria of the trachea?
Seromucous glands
What type of epithelium lines the trachea?
Respiratory epithelium
Test your knowledge on the basic wall structure of the airways from the nose to the alveoli, as well as the functions of respiratory tract mucosa and mucus. Learn about the layers of the respiratory membrane and cell types in the alveolar epithelium.
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