Chapter 6: Skin Flashcards
What are the 3 layers of skin?
Epidermis- outer layer
Dermis- inner layer
Subcutaneous layer- insulating layer
What type of tissue makes up the epidermis?
Stratified squamous epithelium
What type of tissue makes up the dermis?
Connective tissue
What type of tissue makes up the subcutaneous layer?
Areolar and adipose connective tissue?
What are the 3 parts of a nail? And describe them.
Nail plate: overlies nail bed
Nail bed: surface of skin; under nail plate
Lunula: half moon shaped region at base of nail plate
What is hair color due to?
The type and amount of melanin Arrector pili muscle
What is a hair follicle?
Tube like depression of epidermal cells from which hair develops.
What are the 3 parts of hair?
Hair bulb
Hair root
Hair shaft
What are the 6 functions of skin?
Protective covering Prevents water loss Contains sensory receptors Excretes some wastes Helps produce vitamin D Helps regulate body temperature
What is a abnormally high body temperature called?
Hyperthermia
What is a abnormally low body temperature called?
Hypothermia
What is the rule of nines?
Divides body surface into regions of 9%
What is a fourth degree burn?
Full thickness that extends into muscle and bone
What are the 5 layers of epidermis?
Stratum corneum Stratum lucidum Stratum granulosum Stratum spinosum Stratum basale/germinativum