Integumentary SKIN
Integumentary system includes (main things)
Skin, hair, nails, glands
What is the thickened skin at the base of the nail called
eponychium
What gives hair its color?
Melanin
Eccrine, sebaceous, apocrine, ceruminous, mammary
Integumentary System Protection
Bacteria, Infection, Injury, UV Sunlight, Temperature Regulation
Pale white, moon-shaped part
Lunula
Part you can touch
Hair Shaft
Sebaceous glands excrete
Sebum
List ALL layers of the epidermis from superficial to deep
Stratum corneum
Stratum lucidum (in thick skin)
Stratum granulosum
Stratum spinosum
Stratum basale
Visible, hard part of the nail
Nail Plate
Which part of the hair contains living cells responsible for hair growth?
Matrix
Secretes ear wax
Ceruminous Glands
Protein that gives skin its strength and flexibility
Collagen
Main function of the nails?
Protection of the fingertips and toes, and assistance with grasping small objects
In which layer of the skin is the hair follicle located?
The dermis
Which gland is for thermoregulation?
Eccrine
One inch of skin = How many cells?
19 million
Structure that lies directly beneath the nail plate
Nail Bed
Hair is made of
Keratin and stratified squamous epithelium
Why are sebaceous glands important for keeping the skin healthy?
secretes oil which helps keep the skin from cracking and excessive dryness, also has antimicrobial properties