The Retake Papers: Cancer - Integumentary System and...

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Integumentary System and Cancer Joshua Gomez 9/24/18 P.1 Epithelial tissue makes up a lot of our body, and is a very complicated thing. It is avascular, meaning it contains no veins or arteries, thus running without any support of blood. It helps us protect, support, secrete enzymes, and receive numerous stimuli throughout our body. There are many types of epithelial tissues. This includes simple squamous, simple columnar, and stratified squamous. They each serve a unique purpose to the organ they’re located in, and the body as a whole. The simple squamous epithelial tissue is the thinnest, and overall smallest of the 3 types. It allows molecules to pass through, or diffuse into or out of the organ it surrounds. They’re generally located in areas that need this to occur, such as capillaries. Simple columnar tissue is a great source of filtration as well, but it’s not as thin. It provides a neutral barrier only allowing in what is needed. This can be found in the digestive system, and heart. Stratified squamous epithelium are mostly for protection. Their many
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