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Could someone please just help me with the different types of respiratory epithelium at different locations? FA doesn't get too specific about it.
I've inserted my general guesses below. I had the impression that the epithelium slowly becomes more cuboidal and increasingly less ciliated as we move inferiorly, but I'm just not sure as to where the actual changes occur. Please help me fill in the blanks.........
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Type of epithelium
Vestibule of nasal cavity: stratified squamous (with hair)
Turbinates of nasal cavity: ciliated pseudostratified columnar, goblet cells
Nasopharynx: ciliated pseudostratified columnar, goblet cells
Oropharynx: stratified squamous?
Laryngopharynx: ciliated pseudostratified columnar, goblet cells
Larynx (ventricular folds [false vocal cords]): ciliated pseudostratified columnar
Larynx (vocal folds [true vocal cords]): stratified squamous
Trachea: ciliated pseudostratified columnar, bronchial cells of Kulchitsky, goblet cells, brush cells (sensory), basal cells (cell reserve)
Bronchi: ciliated pseudostratified columnar, goblet cells
Terminal bronchioles: Clara cells (non-ciliated columnar), mixed ciliated pseudostratified columnar? / cuboidal?, fewer goblet cells
Respiratory bronchioles: simple squamous, mixed cuboidal?
Alveolar ducts / aveoli: simple squamous (type-I), cuboidal (type-II)
???
I've inserted my general guesses below. I had the impression that the epithelium slowly becomes more cuboidal and increasingly less ciliated as we move inferiorly, but I'm just not sure as to where the actual changes occur. Please help me fill in the blanks.........
------
Type of epithelium
Vestibule of nasal cavity: stratified squamous (with hair)
Turbinates of nasal cavity: ciliated pseudostratified columnar, goblet cells
Nasopharynx: ciliated pseudostratified columnar, goblet cells
Oropharynx: stratified squamous?
Laryngopharynx: ciliated pseudostratified columnar, goblet cells
Larynx (ventricular folds [false vocal cords]): ciliated pseudostratified columnar
Larynx (vocal folds [true vocal cords]): stratified squamous
Trachea: ciliated pseudostratified columnar, bronchial cells of Kulchitsky, goblet cells, brush cells (sensory), basal cells (cell reserve)
Bronchi: ciliated pseudostratified columnar, goblet cells
Terminal bronchioles: Clara cells (non-ciliated columnar), mixed ciliated pseudostratified columnar? / cuboidal?, fewer goblet cells
Respiratory bronchioles: simple squamous, mixed cuboidal?
Alveolar ducts / aveoli: simple squamous (type-I), cuboidal (type-II)
???
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