The Integumentary System Flashcards
older cells that harden with age = keratinization
keratinocytes
What are the layers of the epidermis?
stratum corneum
lucidum
granulosum
spinosum
germinativum/basale
Langerhans cells of the skin
stimulates immune defense
which layer is keratin produced?
stratum granulosum
What is jaundice?
buildup of bilirubin
yellow skin
a skin condition in which the skin cannot synthesize melanin
albinism
two components of dermis
superficial papillary layer
deeper reticular layer
area where hairs are produced
hair follicles
muscle that pulls hair perpendicular to surface of skin in response to threatening situation or cold temperatures
arrector pili muscle
hair shaft
dead epidermal cells
the two major types of glands in the skin
sebaceous and sweat glands
the two types of sweat glands
merocrine/eccrine =sweat pores
apocrine = groin, arm pits
how does the skin respond to injuries and wounds
inflammation
signs of inflammation
SHARP
swelling, heat, altered function, redness, pain
T or F. Shallow breaks in the skin cause epithelial cells to divide more rapidly
True!
abrasion
outer layer of skin rubbed or scratched off
laceration
wound with smooth or jagged edge from a tearing or scraping action
penetrating wound
made by a sharp instrument passing through the skin
avulsion
flaps of skin are torn loose or pulled off completely
describe the healing process of wounds
- blood = clots
- scabs as it dries = protects underlying tissue
- fibroblasts move to site of injury to form new collagen fibers
- phagocytic cells remove dead cells and debris
- scab falls off, tissue replaced
