Integumentary System Flashcards
Integumentary System
Hair, Skin, Nails
Protection
Protects the rest of the body from the elements
Sensory Function
The hair and sensory nerve structures on the skin
Thermoregulation
Helps regulate body temperature
Vitamin D Synthesis
Obtains Vitamin D through UV Radiation
Keratinocyte
Cells in all layers besides basale. Contains keratin
Keratin
The main structural component of hair and nails.
Thick skin
Only on the palms of the hands and soles of the feet
Thin Skin
Layers 1, 3, 4, 5
Epidermis
The surface layer of the skin above the dermis
Dermis
The layer below the epidermis containing blood, nerves, sweat glands, and hair follicles
Hypodermis
the deepest layer of skin
Stratum Corneum
The outermost layer of the epidermis
Stratum Lucidum
A translucent layer of cells
Stratum Granulosum
granular nondividing cells
Stratum Spinosum
spiny cells that contain keratin
Stratum Basale
deepest layer
Hair follicle
tunnel-shaped structure in the epidermis
Hair
threadlike strands growing from humans
Shaft
part of the hair above the scalp
Root
embedded in the hair follicle
Nails
keratinous translucent structure
Free Edge
The white portion that grows from the nail. It is dead skin.
Lunula
White area at the base of the nail.
Cuticle
Tough but non flexible skin
Nail Root
Lunula
Sweat Glands
Used to regulate body temperature
Pores
tiny opening in surface allowing sweat to excrete
Eccrine
Abundantly distruibuted
Apocrine
releases cytoplasm in secretions.
Basal cell Carcinoma
a type of skin cancer that begins in basal cells
Squamous Cell carcinoma
cancer caused by the uncontrolled growth of abnormal squamous cells.
Melanoma
skin cancer that occurs when melanocytes grow out of control
Eczema
A condition that makes skin red and itchy.
Acne
Skin condition when skin gets plugged with oil and hair.
1st Degree Skin Burn
Affects only the epidermis
2nd Degree Skin Burn
Affects first and second layers of skin
3rd Degree Skin Burn
Burn that goes beneath the dermis
4th Degree Burn
Go through all layers of skin and the deeper tissue
Stretch Marks
Scar that happens when skin shrinks or expands quickly
Callus and Corns
Callus are on hands corns are on feet