BME 201 HW #5.docx - Professor Kaiming Ye BME 201 HW#5 1...

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September 26, 2016 Professor Kaiming Ye BME 201 HW #5 1. Three examples of epithelial sheets found in the human body include: the endothelium, which lines the of blood and lymphatic vessels, the mesothelium, which lines a number of body cavities, and the corneal epithelium, which lines the eyes. 2. False. Gap junctions are formed to link the cytoplasm of two cells so that their contents can flow and exchange freely between each. With few exceptions, all animal cells have gap junctions connecting them to their neighbors. As discussed in lecture, these junctions don’t remain open after their formation, but open or close based on changes in the cell. This should be obvious, as a constantly open channel connecting virtually all cells in a tissue is very dangerous in the event of some virus or other harmful substance invading the body.
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