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Ch 11 Dermatology

Skin, Hair and Nails

QuestionAnswer
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