Wrinkles Treatment, Prevention, Cosmetic Procedures

Definition of Wrinkles Wrinkles are furrows or channels in the SKIN, typically resulting from repeated movements, such as facial expressions(for example, crow’s feet and laugh lines), or from long-term exposure to sun and wind. Aging is the single-most significant factor that causes wrinkles. Wrinkles increase with age as the skin loses collagen and subsequently resiliency. As […]

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The Integumentary System

Definition of Integumentary System The integumentary system encloses the body, protecting it from, as well as allowing its interactions with, the external environment. Physician specialists who treat conditions of the SKIN, HAIR, and NAILS are dermatologists. Functions of the Integumentary System The integument, from the Latin word for “cloak,” covers the body. Its structures – the […]

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Fitzpatrick Skin Type Classification

Definition of Fitzpatrick skin type Fitzpatrick skin type is a commonly used classification system for identifying a person’s SKIN characteristics, particularly the likelihood for SUNBURN and developing ACTINIC KERATOSIS and SKIN CANCER. Dermatologists also use Fitzpatrick skin type as a factor in determining appropriate cosmetic procedures to treat skin blemishes and WRINKLES. Fitzpatrick Classification Scale for Skin Types Fitzpatrick Skin Type Classifications Type Skin […]

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Goose Bumps on skin

Definition of Goose Bumps A bumpy texture to the SKIN, also called gooseflesh, that results when the erector muscles in the HAIR follicles contract, causing the hair to “stand up.” Goose bumps occur when a person becomes chilled or fearful, a vestigial response no longer physiologically useful in humans. The physiologic mechanism that causes goose bumps, called the pilomotor REFLEX […]

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Hair – Definition and Dunction

Definition of Hair Hair are the fibers that grow from the hair follicles. Not far above the root of the hair follicle the cells that form the hair fiber are dead, hardened into their shape through compression within the follicle as new cells emerging from the hair’s root push them upward. A hair fiber is five […]

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Keratinocyte – Human cell – Function

Definition of Keratinocyte Keratinocyte – The cell type that makes up most of the epidermis, also called a squamous cell. Keratinocytes originate in the first of the four layers of the epidermis, the stratum basale. Here they either replicate to generate new cells or migrate upward. Migratory keratinocytes acquire melanin from melanocytes. The keratinocytes carry this […]

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Melanocyte Cell – Definition, Function and Dysfunctions

Definition of Melanocyte Melanocyte is a type of cell prominent in the dermis (middle layer of the SKIN) that produces melanin, the pigment that gives color to the skin as well as protects the skin from ultraviolet light damage. There are two types of melanin: the dark brown pigment eumelanin and the red/yellow pigment pheomelanin. The skin […]

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Nails – Definition, Function, Grow and Health

Definition of Nails Nails – The hardened epidermal layer covering the top surfaces of the tips of the fingers and toes. Nails are made of cornified, compacted SKIN cells (keratinocytes) that grow from the base of the nail (matrix or nail-bed root). Though the cells of the matrix are alive, the cells that make up the nails are […]

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Sebaceous Glands Sebum – Treatment – Acne

Defintion of Sebaceous Glands Sebaceous Glands is the small glands that produce sebum, a lipid-based, oily fluid that lubricates the surface of the SKIN. Sebum is mostly the metabolic waste that remains after fat cells break down. Most sebaceous glands empty into HAIR follicles, secreting sebum along the emerging hair shaft. Some sebaceous glands exist independent of hair follicles and […]

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Skin (organ) – Definition, Diseases, Problems and Conditions

Definition of Skin Skin is the body’s largest organ, making up the body’s covering and about 15 percent of the total body weight. The skin’s three layers-epidermis, dermis, and subcutaneous layer-help the body maintain its structure; protect against INFECTION; and regulate fluids, electrolytes, and temperature. Numerous health conditions, localized and systemic, can affect the skin and […]

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