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A&P1-3 Integumentary

Ch 3: Integumentary System

TermDefinition
Acne Inflamed or infected sebaceous glands in the skin
Contact inhibition the end of keratinocyte lateral growth because edges of stratum basale cells are in contact with each other
Cornification Process in which keratinocytes fill with keratin and die as they move toward the surface of the epidermis
Cutaneous Pertaining to the skin
Epidermis Superficial layer of the skin that is subdivided into 4 or 5 general layers called strata
Exocrine glands Glands that produce and secret products that are delivered to the appropriate locations through ducts
Fibrosis Wound healed with scar tissue; normal function is not returned
First-degree burn A burn that involves only the epidermis and whose symptoms include redness, pain, and swelling; the most common type of burn
Keratin A hard, waterproof protein
Mediators of inflammation Chemicals produced by damaged tissues and diffuse away from the damaged area causing any blood vessels they meet to dilate
Melanocytes Cells found in the stratum basale that produce skin pigments called melanin
Papillae bumps on the superficial edge of the dermis in direct contact with the epidermis (found on palmar & plantar surfaces & tongue)
Pathogens Disease-causing foreign invaders
Regeneration Wound healing with the same tissue that was damaged; normal function is returned
Sebum A very oily, lipid-rich substance produced by the sebaceous gland to moisturize the skin and hair
Stratum basale The deepest layer of the epidermis and the only one with cells that actively grow and divide to produce new epidermis
Subcutaneous layer Layer of skin, technically not part of the skin, deep to the dermis and attaches skin to the rest of the body
Sweat glands 4 types of exocrine glands that are located in the dermis (merocrine, apocrine, ceruminous, mammary)
Thin skin Epidermis that contains hair follicles and lacks stratum lucidum.
Wound contracture Scab formation that pulls the edges of the wound closer together as it dries.
Created by: teribere