Integumentary System Flashcards
The body needs protection from numerous threats from the environment. These include viral and bacterial invasion and ultraviolet radiation from the sun.
Integumentary system
the largest organ of the body
Skin
Protect against injury
Protect against the sun UV rays
Skin
Prevent entry of harmful microorganisms
Maintain the proper internal body temperature
Skin function
Excrete waste materials through perspiration
Function as a sense organ
Skin
Three layers of the skin
Epidermis, Dermis, Subcutaneous
stratified squamous epithelium
Epidermis
corium
Dermis
Basal layer includes melanocytes
Epidermis
Stratum corneum
Epidermis
Nerves, vessels, glands, hair follicles
Dermis
Connective tissue (mostly lipocytes)
Subcutaneous
Outermost skin layer
Epidermal layer
Consists of several sublayers
Epidermal layer
Top sublayer is called
stratum corneum
Nonvascular
Epidermal layer
found in the cells
Keratin
bottom sublayer where new cells are produced that push up toward the stratum corneum
Stratum germinativum
continuously and rapidly divide through mitosis, pushing older cells outward.
Living cells in the inner epidermis