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25 Cards in this Set
- Front
- Back
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What is cancer?
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cancer is just unchecked growth
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How does cancer arise?
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it arises from a loss of normal growth conrol in tissues, the balance of old and new tissue is disrupted, cells can no longer self destruct
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What is adoptosis?
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cell suicide
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What are the two mechanisms cancer is able to spread by?
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invasion and metastasis
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What is invasion?
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direct migration and penetration by cancer cells into neighboring tissues
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What is metastasis?
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ability of cancer cells to penetrate into lymphatic and blood vessels, circulate through the bloodstream, and then invade normal tissues elsewhere in the body.
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What does a doctor do when there is evidence of cancer?
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biopsy using piece of tissue, and also microarrays are used to determine wich genes are turned on or off in the sample, and also proteomic profiles are used
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What is a good way of identifity the different causes of cancer?
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studying populations
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What kind of cancer is predominant in japan, us, and australia?
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japan has stomach, us has colon, and australiea has skin
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How can a virus cause cancer?
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a virus can insert nucleic acids into the chromosomes of an infected cell, and this cell can become malignatnt
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What does HPV cause?
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cervical cancer
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What does the bacterium helicobacter pylori do?
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it causes stomach ulcers, and cauases stomach cancer
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How is breast cancer related to heredity?
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5 percent of breast cancers are thought to be caused by a "Breast cancer susceptibility gene"
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How often is hereditary conditions thought to be involved in all cancer cases?
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less than 10%
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How much us death does cancer account for?
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one quarter, just behind heart disease
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How has the cancer rate compared to other diseases changed?
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it has only decrease slightly, while other diseases are down substantially
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What is the most fatal cancer in men and women?
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lung
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What trend is there seen in lung cancer for women?
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the death rate is more than 2 tiem what it was 25 years ago
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What is PSA testing?
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prostate specific antigen
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What have breast cancer rates for women done?
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after increasing rapidly in the 1980's they have leveled off due to more mamograms and less use of hrt
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What does the american cancer society recommend in our diet to help prevent cancer?
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5 or more serving of fruit and vegetables
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What does AMS recommend for exercise for cancer?
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30 minutes 5 days a week
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What percentage of adults don’t engage in leisure time activity?
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one fourth
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What has happened to the prevalence of obesity in kids since 1980?
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it has tripled
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How does obesity compare in states to 1992?
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in 92 just 12 had 50% obesity, now they all do today
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