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The name describes a condition where several separate hair fibers bunch together and emerge from the skin through a single hair canal. Pathology shows that deep in the skin several dermal papillae are closely situated with each producing a fiber, but these separate hair follicle bulbs combine into one hair canal towards the skin surface.
A bulb of keratin attaches to the bottom tip of the hair and keeps it in place while a new hair begins to grow below it. A hair pulled out in this phase will have the bulb of keratin attached to it which appears as a small white ball on the end of the hair. This process cuts the hair off from its blood supply and from the cells that produce new ...
Hair growth begins inside the hair follicle. The only "living" portion of the hair is found in the follicle. The hair that is visible is the hair shaft, which exhibits no biochemical activity and is considered "dead". The base of a hair's root (the "bulb") contains the cells that produce the hair shaft. [12]
Scalp Folliculitis. Scalp folliculitis is a skin condition that occurs when the hair follicles on the scalp become inflamed. This results in pustules, whiteheads, or other pimple-like bumps on the ...
Hair-follicle cycling Hair grows at different speeds and different lengths. Its composition causes different colors and textures, which influence how long the hair strands grow. Marianne Ernst, a German "long hair model" The three stages of hair growth are the anagen, catagen, and telogen phases. Each strand of hair on the human body is at its ...
bulb A thick storage organ, usually underground, consisting of a stem and leaf bases (the inner ones fleshy). bulbel A bulb arising from another bulb. See bulblet. bulbil A small, deciduous bulb or tuber formed in the axil of a leaf or pinna; a means of vegetative propagation. bulblet A bulb arising from another bulb; a bulbel. bullate 1.
Poliosis circumscripta, commonly referred to as a "white forelock", is a condition characterized by localized patches of white hair due to a reduction or absence of melanin in hair follicles. Although traditionally associated with the scalp, poliosis can affect any hairy area on the body, including eyebrows, eyelashes, and beards.
The outer root sheath corresponds with the stratum mucosum (stratum germinativum and stratum spinosum) [1] of the epidermis, and resembles it in the rounded form and soft character of its cells; at the bottom of the hair follicle these cells become continuous with those of the root of the hair.
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