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HST- Skin

TermDefinition
Dermis middle layer of skin
Epidermis Outer layer of skin
Keratin a fibrous protein forming the main structural constituent of hair, feathers, hoofs, claws, horns, etc.
Keratinocytes an epidermal cell that produces keratin.
Melanocytes a mature melanin-forming cell, typically in the skin.
Pacinian corpuscles Nerve receptor: on deep skin layers, ligaments, and joints. Does vibration and pressure.
sebaceous glands Oil Glands, found everywhere except palms and soles, secrete sebum (oil), they are holocrine glands (explode, releasing contents),
sebum oily substance secreted by sebaceous glands
Strata layers of the epidermis
stratum Basale - the deepest layer of the epidermis consisting of stem cells capable of undergoing cell division to form new cells
stratum corneum outermost layer of the epidermis, which consists of flattened, keratinized cells
stratum granulosum a layer of the epidermis that marks the transition between the deeper, metabolically active strata and the dead cells of the more superficial strata
stratum lucidum Clear, transparent layer of the epidermis under the stratum corneum.
stratum spinosum The spiny layer just above the stratum Basale (germinativum) layer.
subcutaneous layer (hypodermis) Beneath dermis; insulating layer, Areolar and adipose connective tissue, Not considered part of the skin, Contains blood vessels that supply skin
sweat Liquid that is a combination of water and salt and small quantities of waste and urea
sweat glands The glands that secrete sweat, located in the dermal layer of the skin
dermal papillae Found in the upper layers of the dermis, they create your fingerprint pattern
hair follicle a small tubular cavity containing the root of a hair
hair root The part of the hair contained within the follicle, below the surface of the scalp.
hair shaft The portion of hair that projects above the epidermis
Created by: srjones
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