Integumentary System Flashcards
(41 cards)
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