King's Day (formerly Queen's Day) in Amsterdam. King's Day 2016 - Koningsdag 2016 is the Dutch national holiday to be held on Monday 27 April 2016.
Lesson Summary. Transitional epithelium is a layer of cells that form the mucosal lining of your ureters, a portion of your urethra, and your urinary bladder. The cells are stratified, which means they create several layers. These cells provide protection and allow the vessels to expand to accommodate fluid.
This enables epithelial cells to control substances that pass from one side of the cell to the other. In this way epithelia serve in absorptive, secretory, and excretory functions. 2. Single or multiple layers of cells-most epithelia form linings or coverings.These can consist of a single cohesive layer or multiple layers of cells cemented together. The location and functional needs of a site dictate what type of epithelium is present.pithelia are tissues that serve as protective layers and/or secretory components of body organs and systems. In the special senses, some epithelia act as receptors in a sensory capacity. Most epithelia possess common characteristics that contribute to their functional capabilities.