The '80s was a decade full of neon leg warmers, power ballads and big hair. But how did we get that big hair that was so bad it's good? A little bit of teasing and a lot of chemistry.
Feb 15, 2019
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New insights on circumventing a key obstacle on the road to anti-scarring treatment have been published by Maksim Plikus, an associate professor in development and cell biology at the UCI School of Biological Sciences and ...
Feb 08, 2019
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(HealthDay)—Hairstyles are a defining feature for many people, but some 'dos can also damage hair follicles.
Feb 01, 2019
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A new school year, and another battle between bloodsucking parasites and the kids they love to live on.
Jan 29, 2019
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Blood levels of a special protein found only in the inner ear spike after exposure to loud noise, UConn Health researchers report. The findings point the way to blood tests that could warn people at risk of hearing loss before ...
Jan 07, 2019
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Scientists have discovered eight genes linked to red hair, helping to solve a mystery of how redheads inherit their flaming locks.
Dec 10, 2018
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Epigenetics is the expression and control of genes. The epigenetics involved in the inner ear is a critical part of the mystery of hearing. A team led by Prof. Karen B. Avraham, Vice Dean of the Sackler Faculty of Medicine ...
Dec 03, 2018
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Why do humans have hair on our arms and legs but not on the palms of our hands and the soles of our feet? It's a fundamental question in human evolution that researchers at the Perelman School of Medicine at the University ...
Nov 28, 2018
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By stirring crosstalk among skin cells that form the roots of hair, researchers report they have regrown hair strands on damaged skin. The findings better explain why hair does not normally grow on wounded skin, and may help ...
Nov 28, 2018
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The age at which children enter puberty has fallen in a large number of Western countries, including Denmark. A new Danish study from the Department of Public Health at Aarhus University indicates that the age of puberty ...
Nov 27, 2018
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Hair is a protein filament that grows through the epidermis from follicles deep within the dermis. The fine, soft hair found on many nonhuman mammals is typically called fur; wool is the characteristically curly hair found on sheep and goats. Found exclusively in mammals, hair is one of the defining characteristics of the mammalian class. Although other non-mammals, especially insects, show filamentous outgrowths, these are not considered "hair" in the scientific sense. So-called "hairs" (trichomes) are also found on plants. The projections on arthropods such as insects and spiders are actually insect bristles, composed of a polysaccharide called chitin. There are varieties of cats, dogs, and mice bred to have little or no visible fur. In some species, hair is absent at certain stages of life. The main component of hair fiber is keratin.
The hair can be divided into three parts length-wise, (1) the bulb, a swelling at the base which originates from the dermis, (2) the root, which is the hair lying beneath the skin surface, and (3) the shaft, which is the hair above the skin surface. In cross-section, there are also three parts, (1) the medulla, an area in the core which contains loose cells and airspaces (2) the cortex, which contains densely packed keratin and (3) the cuticle, which is a single layer of cells arranged like roof shingles.
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