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P2-Body Tissue Essay

  • Submitted by: jeremyKlyeRocks
  • on October 3, 2012
  • Category: Psychology
  • Length: 1,335 words

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Below is an essay on "P2-Body Tissue" from Anti Essays, your source for research papers, essays, and term paper examples.

In this assignment I am going to be outlining the structure of the main tissues of the body. I will be including what tissue is, the four main tissues, there functions, where they are found in the body, what they look like and there structure.
        A tissue is an ensemble of cells, not necessarily identical, but from the same origin, that together carry out a specific function. There are four types of tissue these include, epithelial tissue, muscle tissue, connective tissue and nerve tissue.
        Epithelial tissue covers the whole surface of the body. They form the covering of all body surfaces, line body cavities and hollow organs and are the major tissue in glands.   There are many functions, protecting underlying tissue from injury, containing sensory nerves from sensation, secrete specific substances such as enzymes, absorbing nutrients in the small intestines, excretes waste products in the kidney and sweet from the sweet glands, Promotes diffusion of gases, liquids and nutrients in the walls of capillaries and lungs, Assists in removing foreign particles from the air passages and reduce friction between the walls of the blood vessels and the blood.
      There are two groups of epithelial tissue depending on the number of layers of which it composes; these include Simple Squamous Epithelial Tissue and Simple Cuboidal Epithelial Tissue.
      Simple Squamous Epithelial Tissue has the appearance of thin, flat plates. They have horizontal flattened elliptical nuclei because of the thin flattened from form of the cell. They form the lining of cavities such as the mouth, blood vessels, heart and lungs and make up the outer layers of the skin.
Below is a picture Simple Squamous Epithelial Tissue.

Simple Cuboidal Epithelial Tissue are roughly square or cuboidal in shape. Each one has a spherical nucleus in the centre. Cuboidal epithelium is found in glands and in the lining of the kidney tubules as well as in the ducts of the glands.
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