1. The mucous membrane that lines the trachea is ciliated pseudostratified columnar epithelium similar to that in the nasal cavity and nasopharynx. Goblet cells produce mucus that traps airborne particles and microorganisms, and the cilia propel the mucus upward, where it is either swallowed or expelled.
2. Elastic cartilage provides support with moderate elasticity, and it is found mainly in the larynx.
3. The epiglottis is lined by a similar respiratory epithelium on its laryngeal surface; however, its lingual surface is lined with stratified squamous epithelium.
The epiglottis is lined by a similar respiratory epithelium on its laryngeal surface; however, its lingual surface is lined with stratified squamous epithelium.
1. The mucous membrane that lines the trachea is ciliated pseudostratified columnar epithelium similar to that in the nasal cavity and nasopharynx. Goblet cells produce mucus that traps airborne particles and microorganisms, and the cilia propel the mucus upward, where it is either swallowed or expelled.
2. Elastic cartilage provides support with moderate elasticity, and it is found mainly in the larynx.
3. The epiglottis is lined by a similar respiratory epithelium on its laryngeal surface; however, its lingual surface is lined with stratified squamous epithelium.
The epiglottis is lined by a similar respiratory epithelium on its laryngeal surface; however, its lingual surface is lined with stratified squamous epithelium.