Essay on Anatomy and Physiology Lab

653 Words Apr 17th, 2013 3 Pages
anatomy and physiology lab

1. What are some differences between Judy and Mariah that might make Judy more "at risk" for skin?

cancer than Mariah?Judy had a pasty white skin. Therefore, her skin had less melanin than Mariah who had black hair and more melanin and are more protected against the uv rays of sun.
2. What observations did Judy make concerning her mole?

Her mole changed shaped and turned bigger and its side were jagged. The middle was purplish-black and its edge were darker than its middle.

3. Considering the differences between a benign tumor and a malignant tumor, why might a benign tumor be easier to treat?

benign tumors do not metastasize to other parts of the body but the malignant tumors do. Therefore,
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Exposure to Ultraviolet (UV) light, Moles, Fair skin, freckling, and light hair, Family history of melanoma
Personal history of melanoma, Immune suppression, smoking, Age, and Xeroderma pigmentosum

2. How does sunlight contribute to the development of melanoma?

As it was mentioned above, ultraviolet radiation is main risk factor that increases the risk of getting skin cancer. UVA and UVB are the main culprits. However UVB cause the most damaged by directly effecting DNA of the skin cells. The damage target parts of DNA that have the genes that control skin cell growth. Most importantly melanocyte cells begin to over grow and masses of cells are seen on skin which are what were refer to as mole.

3. What does it mean to be predisposed to getting cancer? If you inherit a mutated cell cycle gene, does that automatically mean that you will get cancer some day? If you inherit a mutated cell cycle gene and participate in risky behaviors such as sunbathing, does that mean that you will automatically get cancer some day?

People that have one good allele of tumor repressor gene and one allele of non functional tumor repressor genes are referred to as being predisposed to getting cancer. No, it does not mean that you would get the disease however, there are higher chance of developing the disease. It become more probable in compare to
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