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Ch 11 Dermatology
Skin, Hair and Nails
| Question | Answer |
|---|---|
| firm, white protein connective tissue fibers throughout the dermis. | collagen |
| pertaining to the skin. | cutaneous |
| layer of dead skin that arises from the epidermis around the proximal end of the nail. It keeps organisms from entering the nail root | cuticle |
| area of the skin that sends sensory information through one neuron to the spinal cord | dermatome |
| layer of skin under the epidermis. It contains collagen and elastin fibers. It contains arteries, veins, neurons,sebaceous glands, sweat glands, and hair follicles. | dermis |
| elastic, yellow protein fiber in the dermis | elastin |
| thin, outermost layer of skin. T he most superficial part of the epidermis consists of dead cells filled with keratin. The deepest part or "basal layer" contains constantly dividing cells and melanocytes. | epidermis |
| tissue category that includes the epidermis and all of its structures. It also includes the mucous membranes that line the walls of internal cavities that connect to the outside of the body. Known as the epithelial tissue. | epithelium |
| normal process of the constant shedding of dead skin cells from the most superficial part of the epidermis. | exfoliation |
| type of gland that secretes substances through a duct. i.e. sebaceous (oil) glands and sudoriferous (sweat) glands in the dermis. | exocrine gland |
| site where a hair is formed. These are located in the dermis. | follicle |
| structure that grows as a shaft from a follicle in the dermis. | hair |
| the skin, hair and nails | integument |
| hard protein found in the cells of the outermost part of the epidermis and in the nails. | keratin |
| cells in the subcutaneous tissue that stores fat | lipocyte |
| whitish half-moon that is under the proximal portion of then nail plate. It is the visible white part of the nail root. | lunula |
| pigment-containing cell in the epidermis that produces melanin, a dark brown or black pigment that gives color to the skin and hair | melanocyte |
| layer of living tissue beneath the nail plate. It is also known as "the quick" | nail bed |
| hard, flat protective covering over the distal end of ea. finger and toe. It is composed of dead cells that contain keratin. It is known as the "nail" | nail plate |
| produces cells that form the lunula and nail plate | nail root |
| process of sweating and the sweat itself. Sweat is secreted by sudoriferous glands. It contains "Na" and waste products. As water content evaporates from the skin, it cools the body. | perspiration |
| process in which an erector muscle contracts (to form a goosebump) and the body hair becomes erect when the skin is cold. | piloerection |
| exocrine gland of the skin that secretes sebum through a duct. Located in the dermis. The duct joins with a hair follicle, and sebum coats the hair shaft. Known as an "oil gland" | sebaceous gland |
| tissue covering of the body that consists of two layers (epidermis and dermis). Part of the integumentary system. | skin |
| exocrine gland of the skin that secretes sweat through a duct. These glands are in the dermis. The duct opens at a pore on the surface of the skin. Known as a "sweat gland" | sudoriferous gland |
Created by:
ricrom81
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