Kulchitsky cells (K-cells) within the respiratory epithelium belong to which system?
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Correct answer: The diffuse neuroendocrine system
K-cells are enteroendocrine-like cells that contain secretory granules. They release hormones and biogenic amines (like serotonin) that help regulate the local tone of airway smooth muscle and blood vessels.
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More Pseudostratified Epithelium questions
- Which of the following is NOT a location for pseudostratified columnar epithelium?
- In a standard H&E stained slide, the basement membrane of the trachea often appears:
- Which cytoskeletal structure is found at the base of each cilium in pseudostratified columnar cells?
- The presence of which cell type is a key diagnostic feature for identifying respiratory epithelium?
- Which of the following proteins provides the motive power for the beating of cilia?
- What is the result of Kartagener syndrome on pseudostratified ciliated epithelium?