Holt McDougal Modern Biology: Online Textbook Help Biologydictionary.net, January 12, 2017. https://biologydictionary.net/transitional-epithelium/.
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AP Chemistry: Tutoring Solution It lines the urinary tract, specifically the major and minor calyces in the kidney, renal pelvis, ureters, bladder, the proximal part of the urethra, and the prostate gland in males. Biology: High School
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credit-by-exam regardless of age or education level.Not sure what college you want to attend yet? In this lesson, you will learn what transitional epithelial cells are, where they are found, and how they are organized into transitional epithelial tissue. and career path that can help you find the school that's right for you.Get the unbiased info you need to find the right school.© copyright 2003-2020 Study.com. Chondrocytes: Definition & Function In the The bladder is an organ that is designed to hold a large proportion of the body’s toxic, liquid waste, before it is expelled from the body. Junctional complexes are symmetrical attachments between two cells usually made of three components: a band of Transitional epithelia are most commonly found in the urinary and male reproductive tract in humans.
Therefore, stratified tissue (tissue having more than one layer of cells) always has an underlying layer of cells ready to manage the harsh environment when the outer cells lining the Another reason why transitional epithelium is stratified is for expansion, so that the tissue can stretch.
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By 'transitional,' we mean that these cells can undergo a structural change in their shape and composition, while 'epithelium' refers to their location. Basal Lamina: Definition & Function
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Transitional epithelium is a stratified tissue made of multiple cell layers, where the cells constituting the tissue can change shape depending on the distention in the organ.When the organ is filled with fluid, cells on the topmost layer of this epithelium can stretch and appear flattened.
The ability of the cells in the superficial layer of this epithelium to change shape (transition from a rounded cuboidal shape to a flattened squamous structure) allows these organs to stretch without exposing underlying tissue to the toxic substances in the urine.This image demonstrates the presence of rounded cells at the apical surface implying that the tissue is not stretched.Transitional epithelia are made of 3-4 layers of cells with the lowermost or basal layer staying in contact with the basement membrane.
7:57 Study.com has thousands of articles about every Bone Growth & Development Factors: Endochondral Ossification get a really good idea of the basic function of these cells
These are regions where the volume and osmolarity of the organ can change rapidly. Renal Corpuscles: Definition & Function This means that the tissue of your bladder can stretch to accommodate more fluids, which in turn, reduces the frequency with which you need to go to the bathroom. You can test out of the Types of Connective Tissue
All rights reserved. The image shows a cross section of the bladder with an inset displaying the The second important function of these cells is to allow the organ to stretch and increase its volume depending on fluid pressure.
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(2017, January 12).
Transitional epithelium (TE), also called urothelium, is a special type of stratified epithelium.
Transitional epithelium is a stratified tissue in which the cells are all have a fairly round shape when the organ it lines is not distended (stretched out). Honors Biology Textbook
The image shows the wall of the urinary bladder in the relaxed state (not distended).
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