Integumentary System Flashcards
The study of skin
Dermatology
Heat energy transmitted as rays to the surrounding area
Radiation
Ray-diation
Heat energy passes by direct contact through a non-moving medium.
Conduction
Convection
Heat transfer occurs in a gas or liquid by the circulation of currents from one region to another.
As perspiration to other fluids on the skin and hair vaporize, they absorb heat.
Evaporation
Air currents can increase evaporative heat loss through convection
What are the two principle layers of the skin?
Epidermis, dermis
Uppermost layer of the epithelium
Epidermis
The innermost layer of the epidermis
Stratum germinativum
(Think of germination. The stratum germinativum is where epithelial cells rapidly multiply to compensate for the loss of cells on the uppermost layer of the epidermis. The cells spread and develops just like a bunch of spores.)
What is the magic phrase you need to remember that lists the layers of the epidermis from deep to superficial?
Big stinky gorillas like corn
Basal, spinosum, granulosum, lucidum, corneum
Epidermis
Outer layer of skin
Epi- on/upon
Thicker layer of the skin
Dermis
Innermost layer of the epidermis
Stratum germinativum
What is another name for the stratum germinativum?
Basal layer
Think base/bottom. It’s the base of the epidermis.
In which epidermal layer do cells rapidly multiply to compensate for the loss of skin cells on the corneum?
Stratum germinativum
The Big in big stinky gorillas like corn
Stratum spinosim
Cells begin to shrink and draw apart
What layer of the epidermis is thicker in body regions of rugged wear (ex: pawpads)?
Stratum spinosum
In which epidermal layer does keratinization begin?
Stratum granulosum
Think of grains. The cell is beginning to harden
