Human skin

Skin color is determined by five main pigments; melanin, keratin, melanoid, hemoglobin, and oxyhemoglobin. According to most researchers skin color first evolved from the Africans when they migrated to Asia and Europe. Human skin color is very diverse; it ranges all the way from dark brown to white. The Human Genome Project is one of the most known experiments to help scientists map the genome both physically and functionally. Human skin acts as a physical barrier that protects chemical and microbial factors that effects how a person looks. Human skin is made up of five layers, stratum corneum, stratum lucidern, stratum granolosum, stratum spinosum, and the basal layer. Two of the main skin color pigments keratin and melanin are found in human skin. Melanin is in the top two layers stratum corneum and lucidern. Keratin is in the bottom three layers stratum granolosum, spinisum, and the basal layer.…

The largest human organ is the human skin, which covers a humans outer being. The general shape of the human skin is much like elastic flat bread stretched to fit an entire skeleton. The human skin resides in the outer realm of the human body like nails. The skin functions as a protection from the elements such as microbes, helps regulate body temperature. Without the skin and nerves could not feel sensations such as heat and cold. Why is touching important? According to Tracy Connor, touching…

When something we touch is bad for us we all want to be able to feel it and pull away as fast as we can to not cause trauma to our skin or even worse, the trauma is so bad that it ends up in death. Tactile perception is a very important part to us humans and animals and without it we wouldn’t be here. Tactile perception is the sense of touch. It also has to do with the brain’s ability to perceive what is being touched. Touch is a complex system called the somatosensory system; the sense that…

The Beauty of Human Skin in Every Color The Beauty of Human Skin in Every Color is a TED talk by Angélica Dass that discusses racism and a project that collects the portraits of people of various skin colors. In the beginning of the talk, Angélica introduced her family background and described their skin colors by comparing it with other objects, such as chocolate, cinnamon, and pancake. This description invokes a positive association of skin colors, and it breaks the common notion of how…

DISCUSSION OF THE CAUSES OF HUMAN SKIN COLOR VARIATIONS The variation of human skin color is a complex phenomenon which have not yet been researched and studied conclusively. However, various researchers and academicians have given insight about the possible causes of this important trait. Different researches using people from different parts of the world, evaluation of their environments and diet and to some extent DNA analysis have given a variety of possible causes of human skin color…

Human evolution is the time by which humans change overtime. Humans develop characteristics and traits that enhance their abilities and chances for survival. Physical and behavior traits have been shown to have some relations with the common ancestors of apes. While human evolution occurs it coexists with the study of population genetics. Population genetics occurs when frequencies in alleles between populations are distributed. Plenty of researchers have used these two ideas to study how…

the shades of the skin as the only altered factor through the series. The paintings also incorporated a color palate of the scheme of hues used to create the different toned skin of the artist. Sun tanned orange shades to cool bark colors to the frosty peach pink were all various colors the author tried to explore. Along with the presentation of paintings, the usage of mixed medium was involved. Varejão self selected and then crafted “thirty-three” hues of skin tones of oil paints based on a…

Because eyes are a really sensitive part of the human body, every single kind of makeup you apply on or around them must be of a good quality and tried first. While using the eyeliner pencil, be sure that it's not very sharp or way too dull. If you do not have an eye pencil sharpener , and have to select from a sharp and a dull pencil, always decide on the dull one. It is because using a really sharp eye pencil is definitely a risk, even professionals with practiced hands, dull them using a…

Psoriasis is a skin condition that involves the immune system, resulting in inflammation, and has the characteristic appearance of silver scales that arise from increased proliferation of the keratinocytes in the epidermal layer [58, 59]. Psoriasis is typically treated with topical steroid medications or with vitamin D analogue medications such as calcipotriol as well as with moisturizing agents [58]. The treatment of psoriasis also includes systemic medications that suppress the immune system…

The human skin is responsible to act as the first line as defense in protecting our body from the external environment and harmful materials such as bacteria. Archaea can be found on human tissue or epidermis, but however, their affluence is unknown and rarely studied. The number of microorganisms on the human epidermis is dependent on a variety of things. For example, the location, presence of moisture, age, sex, immune system and living conditions play an important role in the composition of…