transitional epithelium function and location

As a member, you'll also get unlimited access to over 83,000 The cells of this epithelium are among the more resistant to osmotic pressure. How Do I Use's Assign Lesson Feature? lessons in math, English, science, history, and more. Additionally, the cells are stratified, which means that they create several layers. To protect themselves against the acidic environment, these cells secrete a mucous coating and, as such, are referred to as the mucosa , or mucous-producing layer, of the bladder. Transitional epithelium is composed of about six layers of cells that vary in shape and size. just create an account. The stratified cells of transitional epithelium provide protection and allow the vessels to expand to accommodate fluid. In this lesson, you will learn what transitional epithelial cells are, where they are found, and how they are organized into transitional epithelial tissue. Create your account. Thanks to the elastic capacity of transitional epithelium, as well as the underlying muscular layers, your bladder can stretch from a relaxed state of about two inches long to about five inches and hold anywhere from 16-24 ounces of fluid. One reason transitional epithelium is stratified is for protection. One reason that there are so many layers is that the organs these cells line (the ureters and the urinary bladder) have highly acidic environments. The thickness of the urothelium changes according to the location, varying from a pair of cellular layers in the renal calyces to 6 or 8 layers in the urinary bladder. Enrolling in a course lets you earn progress by passing quizzes and exams. What type of epithelial tissue is found in the urinary bladder and allows it to stretch? You can test out of the Location and characteristics Transitional epithelium (TE), also called urothelium, is a special type of stratified epithelium. c. It produces mucus to allow urine to pass easily. 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Not sure what college you want to attend yet? Well, transitional epithelial tissue, made up of a stratified, multi-layered, collection of transitional epithelial cells, is a tissue that is capable of stretching and contracting to accommodate fluctuating volumes of fluid passing through the structures they line. Function of Transitional Epithelium Due to its location in the excretory system , especially in the ureters and urinary bladder, one of the primary functions of this tissue is to be an extremely effective permeability barrier, impenetrable to water and most small molecules. | {{course.flashcardSetCount}} The epithelium has a varying appearance as they appear cubical or round when in a relaxed state, except the apical layer which seems to be flattened when stretched. However, as the bladder begins to fill with urine, its walls expand, and these folds begin to smooth, just like the coils of a spring smooth as you stretch it from its relaxed state. To learn more, visit our Earning Credit Page. Pivot Joints in the Body: Types & Examples, Quiz & Worksheet - Transitional Epithelium Tissue, Over 83,000 lessons in all major subjects, {{courseNav.course.mDynamicIntFields.lessonCount}}, Functions of Red Blood Cells, White Blood Cells & Platelets, What is Cartilage?

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