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Keloids tend to have a genetic component, which means one is more likely to have keloids if one or both of their parents has them. However, no single gene has yet been identified which is a causing factor in keloid scarring but several susceptibility loci have been discovered, most notably in Chromosome 15.
Hypertrophic scars are often distinguished from keloid scars by their lack of growth outside the original wound area, but this commonly taught distinction can lead to confusion. [6] Keloid scars can occur on anyone, but they are most common in dark-skinned people. [7] They can be caused by surgery, cuts, accident, acne or, sometimes, body ...
Dr. Alexiades says that she believes keloids behave like benign tumors of the skin; the fibroblasts—the cells that make collagen—are proliferating and producing collagen out of control in keloids.
The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [3]
In the scientific classification established by Carl Linnaeus, [1] each species is assigned to a genus resulting in a two-part name. This name denotes the two lowest levels in a hierarchy of ranks , increasingly larger groupings of species based on common traits.
Since the images are authentic, Keloid skin must affect individuals regardless of their skin color- it's a gene that increases the incidence. The argument that geographical ethnic origin could play a part in keloid skin is valid, but I'd prefer to see a more culturally aware understanding of it.
In angiosperms, the specialised leaves that play a part in reproduction are arranged around the stem in an ordered fashion, from the base to the apex of the flower. The floral parts are arranged at the end of a stem without any internodes. The receptacle (also called the floral axis, or thalamus) is generally very small.
The term phylum was coined in 1866 by Ernst Haeckel from the Greek phylon (φῦλον, "race, stock"), related to phyle (φυλή, "tribe, clan"). [4] [5] Haeckel noted that species constantly evolved into new species that seemed to retain few consistent features among themselves and therefore few features that distinguished them as a group ("a self-contained unity"): "perhaps such a real and ...