Microanatomy The trachea is lined with a layer of interspersed layers of column-shaped cells with cilia. The epithelium contains goblet cells, which are glandular, column-shaped cells that produce mucins, the main component of mucus. Mucus helps to moisten and protect the airways. Mucus lines the ciliated cells of the trachea to trap inhaled foreign particles that the cilia then waft upward toward the larynx and then the pharynx where it can be either swallowed into the stomach or expelled as phlegm. This self-clearing mechanism is termed mucociliary clearance. Directly beneath this mucus layer lies the submucosa layer which is composed primarily of fibrous connective tissue and connects the mucosa to the rings of hyaline cartilage beneath.Ayyalasomayajula, Venkat, and Bjørn Skallerud. “Microstructure and Mechanics of the Bovine Trachea: Layer Specific Investigations through SHG Imaging and Biaxial Testing.” Journal of the Mechanical Behavior of Biomedical Materials, vol. 134, 1 Oct. 2022, p. 5, https://doi.org/10.1016/j.jmbbm.2022.105371.
microanatomy the trachea is lined with a layer of interspersed layers of column-shaped cells with cilia the epithelium contains goblet cells which are glandular column-shaped cells that produce mucins the main component of mucus mucus helps to moisten and protect the airways mucus lines the ciliated cells of the trachea to trap inhaled foreign particles that the cilia then waft upward toward the larynx and then the pharynx where it can be either swallowed into the stomach or expelled as phlegm this self-clearing mechanism is termed mucociliary clearance directly beneath this mucus layer lies the submucosa layer which is composed primarily of fibrous connective tissue and connects the mucosa to the rings of hyaline cartilage beneathayyalasomayajula venkat and bjørn skallerud “microstructure and mechanics of the bovine trachea layer specific investigations through shg imaging and biaxial testing” journal of the mechanical behavior of biomedical materials vol 134 1 oct 2022 p 5 https//doiorg/101016/jjmbbm2022105371