Keratin

Epidermis is the tough outermost layer of the skin, and is made up of the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale. It is mainly comprised of the protein keratin, squamous epithelial cells and melanin. The epidermis acts as a waterproof barrier and the melanin absorbs ultra violet light to prevent burns, inflammation, and swelling of the skin. Dermis is the lower layer of the skin that contains collagen, nerve fibers, lymph vessels, and blood…

Cholesteatomatous otitis media is a special variety of chronic otitis media; it can be classified into several types: congenital, primary and secondary acquired, recurrent and residual types. The congenital cholesteatoma is a pearly white mass medial to an intact tympanic membrane with normal tympanic membrane, without any ear discharge or ear drum perforation or any otological procedure in the past [1]. Primary acquired cholesteatoma starts with an intact pars tensa and proceeds to the…

Abstract One of the important feature of human appearance is hair. Specifically it was shown that hair is a prominent cue and that changes in hairstyle or facial hair can mislead the observer in the recognition of faces .Based on the hair sample we can estimate the texture of the skin and based on shape of the hair we can recognize the nature of skin .In this we mainly discussed about one of the skin problem which is caused due to dandruff on the hair scalp. We designed flow based on the…

Acne occurs in many pediatric adolescent patients. The initial cause of acne is a “clogged pore” which is keratin and sebum that rises to the surface of the skin. During puberty, androgens are released in the skin that elicits the glands to produce more sebum. The extra sebum mixes with the keratinocytes, plugs the pilosebaceous follicles to produce a “clogged pore” which is obstruction of comedones also known as blackheads and whiteheads (Ball, Bindler, & Cowen, 2015, P 1047). Open comedones…

Helminths are worm-like parasites. They are grouped and separated by their general external shape and the host organ they inhabit. The definitive classification is based on egg, larvae, and adult stage. There are three types of helminths worms the Trematodes (Flukes), Cestodes (Tapeworm), and the Nermatodes (Roundworm). This parasite unlike lice or fleas lives inside their host. They receive nourishment, and protection of their host while disrupting nutrition absorption which causes weakness…

Did you know… ”highly valuable rhinoceros horn is simply made up of keratin, the same substance as human fingernails.” “Large mammals are killed for their body parts and are used for medicine in Asia.” “Elephants experienced a severe population decline in the late 1980s due to illegal killing (poaching) for their ivory tusks”(US Fish and Wildlife Service) “The threat of extinction caused by poaching is real, and the losses are staggering. During the 1970s and 1980s, ivory poachers killed 93…

Epidermolysis bullosa can be a result of a mutation in one of ten genes (Varkie; et al., 2006). The most common mutations of epidermolysis bullosa simplex are associated with the K5 and K14 types of keratin. The K5 and K14 types of keratin are associated with very important intermediate filament proteins. When a mutation is present here, the basal keratinocytes become fragile and eventually rupture when acted upon mechanically. The K14 and K5 mutations are associated with epidermolysis simplex,…

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External features of Pigeon – Morphology – *The body of pigeon is spindle shaped (Fig.20.1) having a size of 20-25 cm. *The body is divisible into head, neck, trunk and tail. *The body is covered by backwardly directed…

are used to build structural components of the body such as bones and cartilage. They are mostly found in larger cells. These proteins provide keratins, actin and support. I will be talking about why this protein is important and what does it do. The shape of a protei determines its function and there also a lot of different levels. An example of the keratin is that it is the protein of hair, feathers and horns and other appendages. Usually, its bugs that use silk fibers such as insects and…