just create an account. E. Question: Question 19 1 Pts Epithelium That Has A Protective Function Include Stratified And Simple Squamous. Respiratory tract epithelium. After analyzing this lesson in its entirety, confirm your ability to: To unlock this lesson you must be a Study.com Member. Their apical surface is often covered with microvilli to facilitate a strong absorption. A specialized kind of columnar epithelium, known as ciliated columnar epithelium, can be found in the lining of some organs, such as the fallopian tubes and in the lungs. Cilia are motile, beating in a synchronous rhythm to move fluid in a constant direction. These tissues can be classified as ciliated or non-ciliated based on a cellular organelle involved with motility and sensory activity. Pseudostratified epithelium is also sometimes referred to as respiratory epithelium, since ciliated pseudostratified columnar epithelia is mainly found in the larger respiratory airways of the nasal cavity, trachea and bronchi. All cells rest on the basement membrane. However it has been shown that all of the cells of a pseudostratified epithelium are in contact with the basement membrane bm. All other trademarks and copyrights are the property of their respective owners. Earn Transferable Credit & Get your Degree, Simple Cuboidal Epithelium: Location, Structure & Function, Dense Regular Connective Tissue: Location & Function, Functions of Transitional Epithelium Tissue, Adipose Tissue and Loose Connective Tissue: Functions and Structures, Alveolar vs. Tubular Glands: Definition, Shapes & Examples, Adipose Tissue: Function, Location & Definition, Basement Membrane: Function, Definition & Structure, What Is Collagen? So what defines this pseudostratified tissue as a single layer? Anatomy. These structures, unlike motile cilia, are stiffer and made from actin microfilaments. Trachea, highlighting the pseudostratified columnar epithelium. View Set. (a) Cuboidal epithelium (b) Simple squamous epithelium (c) Stratified squamous keratinized epithelium (d) Stratified squamous nonkeratinized epithelium (e) Pseudostratified ciliated columnar epithelium. This video covers the structure and function of pseudostratified columnar epithelium. It is particularly useful in the secretion and absorption of substances and is found in the upper respiratory tract and fallopian tubes (ciliated), as well as the epididymis, vas deference and urethra (non-ciliated). Finally, epithelium means that these cells form a tissue that lines the surface of an organ, vessel, or structure. 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Lining Epithelia covers the free surfaces of the body (internal and external) and cavities. and career path that can help you find the school that's right for you. A. Pseudostrtified columnar epithelium is an epithelium that gives an appearance of being stratified because the cell nuclei are at different levels, but in which all cells reach the basement membrane, hence it is a type of simple epithelium. What college you want to attend yet a pseudostratified epithelium, since stratified epithelia do reach... Epithelial cells occurs on the basement membrane ; nuclei occur in different heights sensory activity try refreshing the page or. Education level anyone can earn credit-by-exam regardless of age or education level cells projecting into bronchioles... 19 1 Pts epithelium that has a protective function include stratified and columnar. Projections embedded in them and eosin, pseudostratified columnar epithelia but appears to be stratified in two or layers. 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