Respiratory epithelium
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Respiratory epithelium, or airway epithelium, is ciliated pseudostratified columnar epithelium a type of columnar epithelium found lining most of the respiratory tract as respiratory mucosa, where it
Cross-section of pseudostratified columnar epithelium
Second cross-section
Goblet cell
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Goblet cells are simple columnar epithelial cells that secrete gel-forming mucins, like mucin 2 in the lower gastrointestinal tract, and mucin 5AC in the respiratory tract. The goblet cells mainly use
Schematic illustration of a goblet cell in close up, illustrating different internal structures of the cell.
Goblet cell in ileum
Section of mouse intestine, mucus of goblet cells in blue
Goblet cells in large intestine