Integumentary System Flashcards
Protection
Protect skin from nature with presence of layers of keratin and glycolipids in the stratum corneum.
Sensory Function
Detect touch, surface temperature, and pain. The epidermis, dermis, and the hypodermis contain specialized sensory nerve structures.
Thermoregulation
Helps regulate body temperature through its tight association with the sympathetic nervous system.
Vitamin D Synthesis
Skin absorb sun for nutrients which the epidermal layer of human skin synthesizes vitamin D3 (cholecalciferol)
Keratinocyte
A cell that manufactures and stores the protein keratin.
Keratin
Intracellular fibrous protein that gives hair, nails, and skin their hardness and water-resistant properties.
Thick Skin Layers
Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum and stratum basale (top to bottom)
Thin Skin Layers
Stratum corneum, stratum granulosum, stratum spinosum and stratum basale (top to bottom)
Main Skin Layers
Epidermis, dermis, and hypodermis (top to bottom)
Stratum Corneum
Most superficial layer
Stratum Lucidum
Smooth, seemingly translucent layer of the epidermis
Stratum Granulosum
Grainy in appearance
Stratum Spinosum
Spiny in appearance
Stratum Basale
Deepest layer of skin
Integumentary System Organs
Hair, skin, nails
Skin
Protects the body; has sensory and nerve fibers that send communication to and from the brain.
Epidermis
Top layer of skin that has five skin layers within.
Dermis
Contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. (Middle)
Hypodermis
Serves to connect the skin to the underlying fascia (fibrous tissue) of the bones and muscles. (Bottom)
Hair
Keratinous filament growing out of the epidermis.
Hair Follicide
Hair grows from a follicide
Hair Shaft
Visible part of the hair that sticks out of the skin
Hair Root
The skin and extends down to the deeper layers of the skin
Nail (Free Edge)
Protects the tips of our fingers and toes
Lunula
At the base where a thick layer of epithelium over the nail matrix forms a crescent-shaped region
Cuticle (Eponychium)
Where the nail fold meets the proximal end of the nail body
Nail Root
Where the nail starts
Pores
Little holes in the skin which things can go through
Apocrine Sweat Glands
Usually associated with hair follicles in densely hairy areas
Eccrine Sweat Glands
Gland that produces a hypotonic sweat for thermoregulation
Basal Cell Carcinoma
Skin cancer that looks pearly white, skin-colored or pink bump because of mainly the sun
Squamous Cell Carcinoma
Skin cancer caused by an uncontrolled growth of abnormal squamous cells
Melanoma
Pigment-producing cells that give color to the skin become the most serious skin cancer
Eczema
Condition that makes your skin red and itchy
Acne
Skin condition that occurs when your hair follicles become plugged with oil and dead skin cells
1st Degree Burn
Affect only the epidermis that is painful and red
2nd Degree Burn
Affects the epidermis and little of the dermis and can cause blisters and pain
3rd Degree Burn
Fully destroys epidermis and dermis which won’t hurt because of nerve damage
4th Degree Burn
These burns destroy all layers of your skin and your bones, muscles, and tendons.
Stretch Marks
Type of scar that develops when our skin stretches or shrinks quickly
Calluses and Corns
It’s thick, hardened layers of skin that develop because of friction/pressure
