Melanin

healthy melanocytes located between the basal cells of the epidermis morph and begin to grow uncontrollably which in turn causes the formation of a cancerous tumour. A melanocyte is a type of skin cell which main purpose is to produce the pigment melanin which protects the skin by absorbing UV radiation, melanocytes can be branched or dendritic and these dendrites transmit pigment to their neighbouring epidermal cells. Melanoma genomes have the ability to harbour somatic mutations caused by…

the harmful UV (ultra violet) radiation which cause skin cancer. Alpha-MSH triggers specific melanocortin receptors (melanocytes) during its mechanism of action leading to production of melanin and also causes effects on lipid metabolism, sexual libido, and appetite through the same melanocortin receptors. Melanin is the skin pigment which offers protection against the destruction of the cells by DNA. Note that skin cancer is initiated by DNA damage.…

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…

Part I – Skin Cancer 1. The causes of skin cancer (aka non-melanoma) is the exposure to the sun. Moles are another cause of skin cancer too. For example, people who live in higher altitude or live in areas with bright-sunlight year-round have a higher risk of developing skin cancer. Also, previous skin cancer, history of sunburns or fragile skin, as well as radiation therapy are other causes of skin cancer. 2. Caucasians are more at risk of skin cancer than other populations because…

Science Explanation and Added Information Adaptations: 0. (No Pigment - Human): We added in this adaptation to increase the level of survivability of humans. We thought that a reduction in pigment (or increase amount of pheomelanin which causes light skin and hair) would lead to less color in the skin and in the hair (or extreme white hair and skin) which will blend in into the surroundings. With this adaptation, these humans will be less likely to stand out in the snow and they will have and…

my skin”-Tyler Joseph. In Harper Lee’s novel, To Kill A Mockingbird, a group of men go to lynch Tom Robinson because of his skin color. Though innocent of the crime he was convicted for, they felt he was guilty because they couldn’t see past the melanin pigmentation in his skin. In this excerpt, Scout learns through Mr. Walter Cunningham Sr.'s clear discomfort but end reaction to her conversation making skills, that true maturity is realizing that people are people, and it's best to treat them…

Malignant Melanoma After doing research on the topic that I received in class I found out information on the topic that I never knew about the dangers and risk I never knew the disease was as deadly and serious as it was , I alway thought it was just that the person skin was just a little darker on the top but it does more damage underneath each layer of skin. In my paper i 'm going to be talking about the dangers and some serious facts that you should know and worn your kids about if you want…

Focusing Beneath the Surface Dermatology is the branch of medicine concerned with the diagnosis and treatment of skin disorders. Diseases involving the skin have a psychological effect on people. Emily Ellen, a patient diagnosed with psoriasis began seeing bumps on her belly about two centimeters in diameter, and as the research continued to find a cure, they had spread to the rest of her body except for her hands, feet, and face. She sought medical help, first seeing her general doctor; the…

Malignant Melanoma Melanoma is caused mainly from the intense exposure of UV radiation from the sun. Melanoma starts in the epidermis and stratum Basale layers. The UV rays will eventually cause the DNA replications which will make the cells replicate very fast making the cancer tumors. When treated early it is most of the time solved and doesn’t come back. When the early melonoma is not treated it will soon turn into malignant melonoma and will spread around the body to many vital organs. If…

Omi and Winant ask us to consider the idea of race in a different light. They argue that race is a social concept. They argue that society tends to think of race as something fixed and objective or an ideological construct. They define race as, “Race is a concept that signifies and symbolizes social conflicts and interests by referring to different types of human bodies.” Race symbolizes social conflict. They point out that the concept of race is directly related to larger social conflicts of…