ANSWERS: 1
  • 1) "Transitional epithelia are multi-layered cells that can contract and expand. These cells, part of the epithelium, are usually found in the urinary tract, especially around the urinary bladder. They are also found in the ureters and superior urethra." Source and further information: http://en.wikipedia.org/wiki/Transitional_epithelia 2) "In biology and dermatology, epithelium is a tissue composed of a layer of cells. In humans, it is one of four primary body tissues. Epithelium lines both the outside (skin) and the inside cavities and lumen of bodies." Source: http://en.wikipedia.org/wiki/Epithelium

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