Ultraviolet

1. A neighbor is walking her dog to the park during her lunch break on a beautiful sunny day. Explain how her skin is working to protect her from ultraviolet radiation due to intense sun exposure. Be sure to discuss the specific structures and substances involved in this protection. Given that skin is broken down into three layers, the layer of the skin that would be directly exposed to the ultraviolet radiation from the sun is the epidermis. Her skin has melanin in it which protects it from the ultraviolet radiation. Pigment would surround the nucleus of the skin cells and escutcheon to protect the nuclear DNA from the ultraviolet rays from the sun. 2. Next, create your own scenario. It can be one of your own real experiences or one you…

Title: The effectiveness of different makeups at same SPF level at blocking ultraviolet light in normal daily lives. Group members participated in the experiment: Mathurra Siva, Julia Enriquez and Jindi Li Introduction Background information: Ultraviolet (UV) light is electromagnetic waves which travel at a same speed of 300000000 m per seconds through the space from the sun. UV light is crucial for the human’s body as it helps people to produce vitamin D. However, excess of UV light without…

sunshine and warmer temps comes intensified UV radiation, which can damage our skin and eyes. Why is Ultraviolet Radiation (UV) so Harmful? You’ve heard UV rays are bad, but did you know that the United States Department of Health and Human Services and the World Health Organization have declared them a carcinogen? You may also not be aware there are three different types of UV radiation, each emitting a different wavelength: UVA Radiation: That “A” on the end stands for aging, by the way! UVA…

Fake tanning is not as safe as what most people might think it is. Fake tanning in a tanning bed is just as bad as tanning in the sun, indoor tanning also exposes your skin to ultraviolet (UV) rays. Whether the UV rays are coming from a tanning bed or the sun they can still cause wrinkles, rashes and dark spots. The most dangerous types of UV rays can change the DNA in cells, which is what experts believe is the main cause of skin cancers.In the US, 35% of adults and 55% of college students have…

Damage to melanocytes occurs after overexposure to ultraviolet radiation from the sun or other sources such as solarium tanning machines, however areas not exposed to the sun have the potential to develop melanoma. Melanoma differs from other skin cancers by its appearance and colour as it often has an irregular edge or surface, and is usually a combination of brown, black, blue, red, white or light grey colours. Melanoma has the potential to spread deeper into the skin and metastasise into the…

non-melanoma skin cancers. The most common methods of reducing UVR exposure include sunscreens, shade seeking, sun avoidance and skin coverage via clothing and hats.2 In the future, skin cancer prevention may be acquired through dietary supplementation. In a recent article in the journal of Demato-Endocrinology, the authors discuss the link between low serum levels of 25-hydroxyvitamin D3 with development of melanoma lesions of thicker size and overall poorer prognosis.4 There are a limited…

because they moved from their natural environment leaving behind the protection of trees and forests to a new environment which was mostly open savannah. Chimps have light skin covered with hair and that is how humans were before they evolved but in the savannah they found little shade and little protection from the sun’s harmful ultraviolet radiation. Therefore natural selection (a mechanism by which evolution takes place) resulted in an increased production of melanin which absorbs the energy…

their fair skin and red hair. As a result, Infection with melanoma have a negative effect on the patients because it is a type of cancer, and it may lead to death if it had not been treated immediately. This essay will talk in detail about the causes, risk factors, and treatment of melanoma , and how it can affect the patient life. There are many causes and risk factors that lead to melanoma. According to statistics, “the risk of melanoma increases as people age, and the…

“One factor that causes premature aging is prolonged exposure to the sun or excessive use of tanning beds and lamps that release UV rays (Premature Aging).” Premature aging, also called photoaging, is when your skin starts to age sooner than normal. Not only is the skin looking older than normal a sign of premature aging of the skin, sagging and wrinkling of the skin is another sign of premature aging of the skin. A sign of premature aging of the skin is sagging and wrinkling of the skin sooner…

to exist. Day after day the sun continuously provides the earth with numerous necessary ingredients including light, heat, solar energy, vitamins and plant life through photosynthesis. “Photosynthesis, the biological conversion of light and energy into chemical energy, is the most important mechanism for putting energy into food chains, and plants and algae are the most important primary producers on the earth.” (Ensminger, 2001) The sun 's exuberant rays shape our daily life in more ways than…