Skin Functions and Regulation
What major homeostatic regulation does our skin help to maintain?
Temperature regulation
This part of our nail overlies the nail bed.
Nail plate
Which layer of our SKIN is the deepest?
Hypodermis/Subcutaneous layer
Which type of burn is referred to as a superficial burn?
1st degree
As we age, our hair begins to turn white. Why?
What are the four types of heat loss?
What are the five types of glands that we covered?
Apocrine, Sebaceous, Eccrine, Ceruminous, and Mammary
Which layer of skin is made up of connective tissue (containing collagen and elastic fibers), epithelial tissue, smooth muscles, and nervous tissues and blood?
Dermis
Which two types of burns do not typically result in scarring?
1st degree and 2nd degree
What is melanin?
Pigmentation of skin
What happens to the cells of the epidermis that helps them to create a waterproof boundary on the outer surface of the skin?
They become keratinized
Hair develops from ________: a group of epidermal cells at the base of a tubelike depression
Hair follicles
What layer of the epidermis is not found everywhere in the body?
Stratum lucidum
3rd degree
Which form of heat loss requires physical contact with another object?
Conduction
When there is a decrease in temperature, what happens to our blood vessels?
They will constrict resulting in a decrease in skin blood flow (conserving heat)
These glands help to keep hair soft, pliable and waterproof.
Sebaceous
A deep cut, one that reaches the dermis or subcutaneous layer, results in _______ breaking & the released blood will form a clot
What factors determines the color of skin? (4 main)
Heredity, environment, blood circulation, and blood temperature.
What happens internally when our body temperature gets too low?
The hypothalamus will send signals for dermal blood vessels to constrict
Sweat glands to become inactive.
Muscles begin to contract involuntarily .
What is sebum made of? (2 things)
Mixture of fatty material and cellular debris
Cells of the epidermis derive from the simple cuboidal or columnar cells of the stratum basale. Describe how the cells change as they become integrated into the different layers of the epidermis?
They are flattened as they reach the surface and they are keratinized
Where do amniotic membranes come from?
Placental tissue
Unless exposure to source continues, the tan will fade as pigmented epidermal cells become keratinized and wear away.