Breast Cancer is an genetic mutation. Breast cancer is a disease in which certain cells in the breast become abnormal and multiply without control or order to form a tumor. The most common form of breast cancer begins in cells lining the ducts that carry milk to the nipple (ductal cancer). Other forms of breast cancer begin in the glands that produce milk (lobular cancer) or in other parts of the breast.
Early breast cancer usually does not cause pain and may exhibit no noticeable symptoms. As the cancer progresses, signs and symptoms can include a lump or thickening in or near the breast; a change in the size or shape of the breast; nipple discharge, tenderness, or retraction (turning inward); and skin irritation, dimpling, or scaliness. These changes can occur as part of many different conditions, however. Having one or more of these symptoms does not mean that a person definitely has breast cancer.
In some cases, cancerous tumors can invade surrounding tissue and spread to other parts of the body. If breast cancer spreads, cancerous cells most often appear in the bones, liver, lungs, or brain. Tumors that begin at one site and then spread to other areas of the body are called metastatic cancers.
A small percentage of all breast cancers cluster in families. Hereditary cancers are those associated with inherited gene mutations. Hereditary breast cancers tend to occur earlier in life than noninherited (sporadic) cases and are more likely to involve both breasts
A gene mutation is a permanent change in the DNA sequence that makes up a gene. Mutations range in size from a single DNA building block (DNA base) to a large segment of a chromosome.
Gene mutations occur in two ways: they can be inherited from a parent or acquired during a person’s lifetime. Mutations that are passed from parent to child are called hereditary mutations or germline mutations (because they are present in the egg and sperm cells, which are also called germ cells). This type of mutation is present throughout a person’s life in virtually every cell in the body.
Thursday, March 27, 2008
Monday, March 3, 2008
WHAT IS SERVICE LEARNING?
Service-learning is a teaching and learning strategy that integrates meaningful community service with instruction and reflection to enrich the learning experience, teach civic responsibility, and strengthen communities.
MY OPINION ON SERVICE LEARNING
I THINK THAT DOING SERVICE LEARNING HELP PEOPLE IN GENERAL, NO MATTER WHAT AGE OR RACE YOU ARE. IT SURELY KEPT ME OUT OF TROUBLE IN MIDDLE SCHOOL WHEN I ATTENDED A PROGRAM CALLED "CITY YEAR". I ALSO REALLY FELT GOOD AT THE END OF EACH SATURDAY BECAUSE I FELT THAT I GAVE UP MY TIME TO HELP OTHERS. THE THINGS THAT I DID WAS PLANTING GARDENS, GOING TO ELDERLY HOMES, AND THINGS OF THAT NATURE.
HOWS DOES SERVICE LEARNING IMPACT ME AND MY FELLOW CLASSMATES...
- Middle and high school students who engaged in quality service-learning programs showed increases in measures of personal and social responsibility, communication and sense of educational competence (Weiler, et. al., 1998).
- Students who engaged in service-learning ranked responsibility as a more important value and reported a higher sense of responsibility to their school than comparison groups (Leming, 1998).
- Students perceive themselves to be more socially competent after engaging in service-learning.
- Students who engaged in service-learning are more likely to treat each other kindly, help each other and care about doing their best.
- Students who engaged in service-learning are more likely to increase their sense of self-esteem and self-efficacy.
- Middle school male students reported increased self-esteem and fewer behavioral problems after engaging in service-learning (Switzer, et. al., 1995).
What Im Doing For Service Learning...
I'm continuing what I did last year for service learning. I'm going to my old school to help out with the students. Also i will help out with the athletics department at my old elementary school.
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