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Tumors - Online Term Paper

Tumors

The word Tumor simply means abnormal growth. Frequently this term is incorrectly used interchangeably with cancer. However, tumor may refer to a benign (non-cancerous) or malignant (cancerous) growth. Both benign and malignant result from the abnormal growth of cells. Normal cells reproduce in an order controlled fashion. In some body tissues, such as the epidermis (e.g. skin), the bone marrow (where the blood is made), and the mucous membranes (which line the gastrointestinal tract), new cells are formed regularly in order to replace those lost by injury. Some cells, such as neurons, do not have the ability to reproduce and cannot regenerate even after tissue damage. Normally, new cells ...

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normal cells undergo physical and structural changes as they develop to form different tissues of the body. Differentiated cells specialize in multiple physiological functions. For example, a highly differentiated cell like a nerve cell still shares many features in common with all cells (i.e. nucleus, cell membrane, and mitochondria). However, microscopically and functionally it is unique from other cell types in the body and performs certain functions specific to that cell.
Benign are usually associated with a more favorable outcome, unless their presence causes pressure in critical areas such as the brain. The degree of differentiation of malignant cells is variable. Cancer cells that closely resemble the tissue of origin are called well-differentiated. Bizarre tumor cells bearing little similarity to the tissue of origin are termed undifferentiated or anaplastic. Undifferentiated or anaplastic malignancies are usually more aggressive in their growth and behavior than ...

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Tumors. (2006, September 10). Retrieved November 23, 2024, from http://www.essayworld.com/essays/Tumors/52146

"Tumors." Essayworld.com. Essayworld.com, 10 Sep. 2006. Web. 23 Nov. 2024. <http://www.essayworld.com/essays/Tumors/52146>

"Tumors." Essayworld.com. September 10, 2006. Accessed November 23, 2024. http://www.essayworld.com/essays/Tumors/52146.

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PAPER DETAILS

Added: 9/10/2006 02:05:35 AM
Category: Health & Medicine
Type: Premium Paper
Words: 534
Pages: 2

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